diff --git a/openedx_tagging/core/tagging/api.py b/openedx_tagging/core/tagging/api.py
index c0b156ee..07114acf 100644
--- a/openedx_tagging/core/tagging/api.py
+++ b/openedx_tagging/core/tagging/api.py
@@ -79,22 +79,29 @@ def get_tags(taxonomy: Taxonomy) -> list[Tag]:
     return taxonomy.cast().get_tags()
 
 
-def get_root_tags(taxonomy: Taxonomy) -> list[Tag]:
+def get_root_tags(taxonomy: Taxonomy, search_term: str | None = None) -> list[Tag]:
     """
     Returns a list of the root tags for the given taxonomy.
 
     Note that if the taxonomy allows free-text tags, then the returned list will be empty.
     """
-    return taxonomy.cast().get_tags(only_roots=True)
+    return list(taxonomy.cast().get_filtered_tags(search_term=search_term))
 
 
-def get_children_tags(taxonomy: Taxonomy, parent_tag_id: int) -> list[Tag]:
+def get_children_tags(
+    taxonomy: Taxonomy,
+    parent_tag_id: int,
+    search_term: str | None = None,
+) -> list[Tag]:
     """
     Returns a list of children tags for the given parent tag.
 
     Note that if the taxonomy allows free-text tags, then the returned list will be empty.
     """
-    return taxonomy.cast().get_children_tags(parent_tag_id)
+    return list(taxonomy.cast().get_filtered_tags(
+        parent_tag_id=parent_tag_id,
+        search_term=search_term,
+    ))
 
 
 def resync_object_tags(object_tags: QuerySet | None = None) -> int:
diff --git a/openedx_tagging/core/tagging/models/base.py b/openedx_tagging/core/tagging/models/base.py
index 4121f74b..621b3023 100644
--- a/openedx_tagging/core/tagging/models/base.py
+++ b/openedx_tagging/core/tagging/models/base.py
@@ -270,8 +270,7 @@ def copy(self, taxonomy: Taxonomy) -> Taxonomy:
 
     def get_tags(
         self,
-        tag_set: models.QuerySet | None = None,
-        only_roots: bool = False,
+        tag_set: models.QuerySet[Tag] | None = None,
     ) -> list[Tag]:
         """
         Returns a list of all Tags in the current taxonomy, from the root(s)
@@ -279,8 +278,6 @@ def get_tags(
 
         Use `tag_set` to do an initial filtering of the tags.
 
-        Use `only_roots` to get only the root tags (depth=0).
-
         Annotates each returned Tag with its ``depth`` in the tree (starting at
         0).
 
@@ -295,11 +292,8 @@ def get_tags(
             tag_set = self.tag_set.all()
 
         parents = None
-        max_depth = TAXONOMY_MAX_DEPTH
-        if only_roots:
-            max_depth = 1
 
-        for depth in range(max_depth):
+        for depth in range(TAXONOMY_MAX_DEPTH):
             filtered_tags = tag_set.prefetch_related("parent")
             if parents is None:
                 filtered_tags = filtered_tags.filter(parent=None)
@@ -320,16 +314,32 @@ def get_tags(
                 break
         return tags
 
-    def get_children_tags(self, parent_tag_id: int) -> list[Tag]:
+    def get_filtered_tags(
+        self,
+        tag_set: models.QuerySet | None = None,
+        parent_tag_id: int | None = None,
+        search_term: str | None = None,  
+    ) -> models.QuerySet[Tag]:
         """
-        Returns a list of children tags of `parent_tag_id` in the current taxonomy.
+        Returns a filtered QuerySet of tags.
+        By default returns the root tags of the given taxonomy
+
+        Use `parent_tag_id` to retunr the children of a tag.
+
+        Use `search_term` to filter the results by values that contains `search_term`.
         """
+        if tag_set is None:
+            tag_set = self.tag_set
+
         if self.allow_free_text:
-            return []
+            return tag_set.none()
+
+        tag_set = tag_set.filter(parent=parent_tag_id)
+
+        if search_term:
+            tag_set = tag_set.filter(value__icontains=search_term)
 
-        return list(self.tag_set.filter(parent=parent_tag_id).order_by(
-            "parent__value", "value", "id"
-        ))
+        return tag_set.order_by("value", "id")
 
     def validate_object_tag(
         self,
diff --git a/openedx_tagging/core/tagging/models/system_defined.py b/openedx_tagging/core/tagging/models/system_defined.py
index 0807a8d9..8976a79a 100644
--- a/openedx_tagging/core/tagging/models/system_defined.py
+++ b/openedx_tagging/core/tagging/models/system_defined.py
@@ -10,7 +10,7 @@
 from django.contrib.auth import get_user_model
 from django.db import models
 
-from openedx_tagging.core.tagging.models.base import ObjectTag
+from openedx_tagging.core.tagging.models.base import ObjectTag, Tag
 
 from .base import ObjectTag, Tag, Taxonomy
 
@@ -243,15 +243,35 @@ class Meta:
 
     def get_tags(
         self,
-        tag_set: models.QuerySet | None = None,
-        only_roots: bool = False,
+        tag_set: models.QuerySet[Tag] | None = None,
     ) -> list[Tag]:
         """
         Returns a list of all the available Language Tags, annotated with ``depth`` = 0.
         """
         available_langs = self._get_available_languages()
         tag_set = self.tag_set.filter(external_id__in=available_langs)
-        return super().get_tags(tag_set=tag_set, only_roots=only_roots)
+        return super().get_tags(tag_set=tag_set)
+    
+    def get_filtered_tags(
+        self,
+        tag_set: models.QuerySet[Tag] | None = None,
+        parent_tag_id: int | None = None,
+        search_term: str | None = None
+    ) -> models.QuerySet[Tag]:
+        """
+        Returns a filtered QuerySet of available Language Tags.
+        By default returns all the available Language Tags.
+
+        `parent_tag_id` returns an empty result because all Language tags are root tags.
+
+        Use `search_term` to filter the results by values that contains `search_term`.
+        """
+        if parent_tag_id:
+            return self.tag_set.none()
+
+        available_langs = self._get_available_languages()
+        tag_set = self.tag_set.filter(external_id__in=available_langs)
+        return super().get_filtered_tags(tag_set=tag_set, search_term=search_term)
 
     def _get_available_languages(cls) -> set[str]:
         """
diff --git a/openedx_tagging/core/tagging/rest_api/paginators.py b/openedx_tagging/core/tagging/rest_api/paginators.py
index 195978bd..204412c1 100644
--- a/openedx_tagging/core/tagging/rest_api/paginators.py
+++ b/openedx_tagging/core/tagging/rest_api/paginators.py
@@ -4,6 +4,9 @@
 # From this point, the tags begin to be paginated
 TAGS_THRESHOLD = 1000
 
+# From this point, search tags begin to be paginated 
+SEARCH_TAGS_THRESHOLD = 200
+
 
 class TagsPagination(DefaultPagination):
     """
diff --git a/openedx_tagging/core/tagging/rest_api/v1/views.py b/openedx_tagging/core/tagging/rest_api/v1/views.py
index 6910da23..28402450 100644
--- a/openedx_tagging/core/tagging/rest_api/v1/views.py
+++ b/openedx_tagging/core/tagging/rest_api/v1/views.py
@@ -21,8 +21,17 @@
 )
 from ...models import Taxonomy
 from ...rules import ChangeObjectTagPermissionItem
-from ..paginators import TAGS_THRESHOLD, DisabledTagsPagination, TagsPagination
-from .permissions import ObjectTagObjectPermissions, TagListPermissions, TaxonomyObjectPermissions
+from ..paginators import (
+    TAGS_THRESHOLD,
+    SEARCH_TAGS_THRESHOLD,
+    DisabledTagsPagination,
+    TagsPagination,
+)
+from .permissions import (
+    ObjectTagObjectPermissions,
+    TagListPermissions,
+    TaxonomyObjectPermissions,
+)
 from .serializers import (
     ObjectTagListQueryParamsSerializer,
     ObjectTagSerializer,
@@ -375,7 +384,8 @@ def get_taxonomy(self, pk: int) -> Taxonomy:
     def get_matching_tags(
         self,
         taxonomy_id: int,
-        parent_tag_id: str | None = None
+        parent_tag_id: str | None = None,
+        search_term: str | None = None,
     ) -> tuple[list[Tag], bool]:
         """
         Returns a list of tags for the given taxonomy. Also returns a boolean
@@ -386,14 +396,28 @@ def get_matching_tags(
 
         Use `parent_tag_id` to get the children of the given tag.
 
-        TODO: Search tags
+        Use `search_term` to filter tags values that contains the given term.
+
+        TODO: Missing tests for search
         """
         taxonomy = self.get_taxonomy(taxonomy_id)
         if parent_tag_id:
-            return get_children_tags(taxonomy, int(parent_tag_id)), True
+            return get_children_tags(
+                taxonomy,
+                int(parent_tag_id),
+                search_term=search_term,
+            ), True
         else:
-            pagination_enabled = taxonomy.tag_set.count() > TAGS_THRESHOLD
-            return get_root_tags(taxonomy), pagination_enabled
+            result = get_root_tags(
+                taxonomy,
+                search_term=search_term
+            )
+            if search_term:
+                pagination_enabled = len(result) > SEARCH_TAGS_THRESHOLD
+            else:
+                pagination_enabled = taxonomy.tag_set.count() > TAGS_THRESHOLD
+
+            return result, pagination_enabled
 
     def get_queryset(self) -> list[Tag]:  # type: ignore
         """
diff --git a/tests/openedx_tagging/core/tagging/test_api.py b/tests/openedx_tagging/core/tagging/test_api.py
index 0372f879..e0ac757f 100644
--- a/tests/openedx_tagging/core/tagging/test_api.py
+++ b/tests/openedx_tagging/core/tagging/test_api.py
@@ -17,9 +17,17 @@
     ("az", "Azerbaijani"),
     ("en", "English"),
     ("id", "Indonesian"),
+    ("ga", "Irish"),
+    ("pl", "Polish"),
     ("qu", "Quechua"),
     ("zu", "Zulu"),
 ]
+# Languages that contains 'ish'
+filtered_test_languages = [
+    ("en", "English"),
+    ("ga", "Irish"),
+    ("pl", "Polish"),
+]
 
 
 @ddt.ddt
@@ -112,18 +120,38 @@ def test_get_tags(self) -> None:
     def test_get_root_tags(self):
         self.setup_tag_depths()
         assert tagging_api.get_root_tags(self.taxonomy) == self.domain_tags
+        assert (
+            tagging_api.get_root_tags(self.taxonomy, search_term='aR') 
+                == self.filtered_domain_tags
+        )
         assert tagging_api.get_root_tags(self.system_taxonomy) == self.system_tags
         tags = tagging_api.get_root_tags(self.language_taxonomy)
         langs = [tag.external_id for tag in tags]
         expected_langs = [lang[0] for lang in test_languages]
         assert langs == expected_langs
 
+        tags = tagging_api.get_root_tags(self.language_taxonomy, search_term='IsH')
+        langs = [tag.external_id for tag in tags]
+        expected_langs = [lang[0] for lang in filtered_test_languages]
+        assert langs == expected_langs
+
     def test_get_children_tags(self):
-        assert (tagging_api.get_children_tags(self.taxonomy, self.animalia.id) ==
-                self.phylum_tags)
+        assert tagging_api.get_children_tags(
+            self.taxonomy,
+            self.animalia.id,
+        ) == self.phylum_tags
+        assert tagging_api.get_children_tags(
+                self.taxonomy,
+                self.animalia.id,
+                search_term='dA',
+        ) == self.filtered_phylum_tags
+        assert not tagging_api.get_children_tags(
+            self.system_taxonomy,
+            self.system_taxonomy_tag.id,
+        )
         assert not tagging_api.get_children_tags(
-                self.system_taxonomy,
-                self.system_taxonomy_tag.id
+            self.language_taxonomy,
+            self.english_tag,
         )
 
     def check_object_tag(
diff --git a/tests/openedx_tagging/core/tagging/test_models.py b/tests/openedx_tagging/core/tagging/test_models.py
index 95a32604..e0fdeaee 100644
--- a/tests/openedx_tagging/core/tagging/test_models.py
+++ b/tests/openedx_tagging/core/tagging/test_models.py
@@ -41,6 +41,7 @@ def setUp(self):
         self.mammalia = get_tag("Mammalia")
         self.animalia = get_tag("Animalia")
         self.system_taxonomy_tag = get_tag("System Tag 1")
+        self.english_tag = get_tag("English")
         self.user_1 = get_user_model()(
             id=1,
             username="test_user_1",
@@ -59,6 +60,12 @@ def setUp(self):
             get_tag("Bacteria"),
             get_tag("Eukaryota"),
         ]
+        # Domain tags that contains 'ar'
+        self.filtered_domain_tags = [
+            get_tag("Archaea"),
+            get_tag("Eukaryota"),
+        ]
+
         # Kingdom tags (depth=1)
         self.kingdom_tags = [
             # Kingdoms of https://en.wikipedia.org/wiki/Archaea
@@ -75,6 +82,7 @@ def setUp(self):
             get_tag("Plantae"),
             get_tag("Protista"),
         ]
+
         # Phylum tags (depth=2)
         self.phylum_tags = [
             # Some phyla of https://en.wikipedia.org/wiki/Animalia
@@ -86,6 +94,12 @@ def setUp(self):
             get_tag("Placozoa"),
             get_tag("Porifera"),
         ]
+        # Phylum tags that contains 'da'
+        self.filtered_phylum_tags = [
+            get_tag("Arthropoda"),
+            get_tag("Chordata"),
+            get_tag("Cnidaria"),
+        ]
 
         self.system_tags = [
             get_tag("System Tag 1"),
@@ -221,9 +235,11 @@ def test_get_tags(self):
             *self.phylum_tags,
         ]
 
-    def test_get_only_roots(self):
-        self.setup_tag_depths()
-        assert self.taxonomy.get_tags(only_roots=True) == self.domain_tags
+    def test_get_root_tags(self):
+        assert list(self.taxonomy.get_filtered_tags()) == self.domain_tags
+        assert list(
+            self.taxonomy.get_filtered_tags(search_term='aR')
+        ) == self.filtered_domain_tags
 
     def test_get_tags_free_text(self):
         self.taxonomy.allow_free_text = True
@@ -231,13 +247,35 @@ def test_get_tags_free_text(self):
             assert self.taxonomy.get_tags() == []
 
     def test_get_children_tags(self):
-        assert (list(self.taxonomy.get_children_tags(self.animalia.id)) ==
-               self.phylum_tags)
-        assert not list(self.system_taxonomy.get_children_tags(self.system_taxonomy_tag.id))
+        assert list(
+            self.taxonomy.get_filtered_tags(parent_tag_id=self.animalia.id)
+        ) == self.phylum_tags
+        print(self.taxonomy.get_filtered_tags(
+                parent_tag_id=self.animalia.id,
+                search_term='dA',
+            ))
+        print(self.filtered_phylum_tags)
+        assert list(
+            self.taxonomy.get_filtered_tags(
+                parent_tag_id=self.animalia.id,
+                search_term='dA',
+            )
+        ) == self.filtered_phylum_tags
+        assert not list(
+            self.system_taxonomy.get_filtered_tags(
+                parent_tag_id=self.system_taxonomy_tag.id
+            )
+        )
 
     def test_get_children_tags_free_text(self):
         self.taxonomy.allow_free_text = True
-        assert not list(self.taxonomy.get_children_tags(self.animalia.id))
+        assert not list(self.taxonomy.get_filtered_tags(
+            parent_tag_id=self.animalia.id
+        ))
+        assert not list(self.taxonomy.get_filtered_tags(
+            parent_tag_id=self.animalia.id,
+            search_term='dA',
+        ))
 
     def test_get_tags_shallow_taxonomy(self):
         taxonomy = Taxonomy.objects.create(name="Difficulty")
diff --git a/tests/openedx_tagging/core/tagging/test_views.py b/tests/openedx_tagging/core/tagging/test_views.py
index 98981b83..43005c73 100644
--- a/tests/openedx_tagging/core/tagging/test_views.py
+++ b/tests/openedx_tagging/core/tagging/test_views.py
@@ -928,7 +928,11 @@ def test_large_taxonomy(self):
     def test_next_page_large_taxonomy(self):
         self._build_large_taxonomy()
         self.client.force_authenticate(user=self.staff)
+
+        # Gets the root tags to obtain the next links
         response = self.client.get(self.large_taxonomy_url)
+        
+        # Gets the next root tags
         response = self.client.get(response.data.get("next"))
         assert response.status_code == status.HTTP_200_OK
 
@@ -952,8 +956,12 @@ def test_next_page_large_taxonomy(self):
     def test_get_children(self):
         self._build_large_taxonomy()
         self.client.force_authenticate(user=self.staff)
+
+        # Get root tags to obtain the children link of a tag.
         response = self.client.get(self.large_taxonomy_url)
         results = response.data.get("results", [])
+
+        # Get children tags
         response = self.client.get(results[0].get("sub_tags_link"))
         assert response.status_code == status.HTTP_200_OK
 
@@ -993,11 +1001,16 @@ def test_get_children(self):
         assert data.get("right_index") == self.page_size
 
     def test_get_leaves(self):
+        # Get tags depth=2
         self._build_large_taxonomy()
         self.client.force_authenticate(user=self.staff)
+
+        # Build url to get tags depth=2
         url = f"{self.large_taxonomy_url}?parent_tag_id=31"
         response = self.client.get(url)
         results = response.data.get("results", [])
+
+        # Checking tag fields
         tag = self.large_taxonomy.tag_set.get(id=results[0].get("id"))
         assert results[0].get("value") == tag.value
         assert results[0].get("taxonomy_id") == self.large_taxonomy.id
@@ -1008,9 +1021,15 @@ def test_get_leaves(self):
     def test_next_children(self):
         self._build_large_taxonomy()
         self.client.force_authenticate(user=self.staff)
+
+        # Get roots to obtain children link of a tag
         response = self.client.get(self.large_taxonomy_url)
         results = response.data.get("results", [])
+
+        # Get children to obtain next link
         response = self.client.get(results[0].get("sub_tags_link"))
+
+        # Get next children
         response = self.client.get(response.data.get("next"))
         assert response.status_code == status.HTTP_200_OK