diff --git a/kodemy-search/src/main/java/pl/sknikod/kodemysearch/infrastructure/module/material/MaterialSearchService.java b/kodemy-search/src/main/java/pl/sknikod/kodemysearch/infrastructure/module/material/MaterialSearchService.java
index 50ccc403..d95d9947 100644
--- a/kodemy-search/src/main/java/pl/sknikod/kodemysearch/infrastructure/module/material/MaterialSearchService.java
+++ b/kodemy-search/src/main/java/pl/sknikod/kodemysearch/infrastructure/module/material/MaterialSearchService.java
@@ -45,11 +45,8 @@ private SearchCriteria createSearchCriteria(@NonNull MaterialControllerDefinitio
             ));
         var categoryIds = filterSearchParams.getCategoryIds();
         if (Objects.nonNull(categoryIds) && !categoryIds.isEmpty()) {
-            categoryIds.forEach(categoryId -> {
-                criteria.addPhraseField(new SearchCriteria.PhraseField(
-                        "categoryId", String.valueOf(categoryId), false, false
-                ));
-            });
+            criteria.addArrayField(new SearchCriteria.ArrayField(
+                    "categoryId", categoryIds.stream().map(String::valueOf).toList()));
         }
         if (Objects.nonNull(filterSearchParams.getMinAvgGrade()) || Objects.nonNull(filterSearchParams.getMaxAvgGrade()))
             criteria.addRangeField(new SearchCriteria.RangeField<>(
diff --git a/kodemy-search/src/main/java/pl/sknikod/kodemysearch/infrastructure/module/material/SearchCriteria.java b/kodemy-search/src/main/java/pl/sknikod/kodemysearch/infrastructure/module/material/SearchCriteria.java
index 5f43019c..cd848002 100644
--- a/kodemy-search/src/main/java/pl/sknikod/kodemysearch/infrastructure/module/material/SearchCriteria.java
+++ b/kodemy-search/src/main/java/pl/sknikod/kodemysearch/infrastructure/module/material/SearchCriteria.java
@@ -15,6 +15,7 @@ public class SearchCriteria {
     String anyPhrase;
     List<PhraseField> phraseFields = new ArrayList<>();
     List<RangeField<?>> rangeFields = new ArrayList<>();
+    List<ArrayField> arrayFields = new ArrayList<>();
     Pageable pageable;
 
     public SearchCriteria(@NonNull String anyPhrase, @NonNull Pageable pageable) {
@@ -30,6 +31,10 @@ public void addRangeField(RangeField<?> field) {
         rangeFields.add(field);
     }
 
+    public void addArrayField(ArrayField field) {
+        arrayFields.add(field);
+    }
+
     @Getter
     private abstract static class Field {
         private final String name;
@@ -65,6 +70,16 @@ public PhraseField(String name, String value, boolean wildcard, boolean mustNot)
         }
     }
 
+    @Getter
+    public static class ArrayField extends Field {
+        private final List<String> values;
+
+        public ArrayField(String name, List<String> values) {
+            super(name);
+            this.values = values;
+        }
+    }
+
     @Getter
     public static class ContentField {
         private final String value;
diff --git a/kodemy-search/src/main/java/pl/sknikod/kodemysearch/infrastructure/module/material/SearchRequestBuilder.java b/kodemy-search/src/main/java/pl/sknikod/kodemysearch/infrastructure/module/material/SearchRequestBuilder.java
index 5a274bf7..d6c1098b 100644
--- a/kodemy-search/src/main/java/pl/sknikod/kodemysearch/infrastructure/module/material/SearchRequestBuilder.java
+++ b/kodemy-search/src/main/java/pl/sknikod/kodemysearch/infrastructure/module/material/SearchRequestBuilder.java
@@ -3,11 +3,13 @@
 import io.jsonwebtoken.lang.Assert;
 import io.jsonwebtoken.lang.Strings;
 import org.opensearch.client.json.JsonData;
+import org.opensearch.client.opensearch._types.FieldValue;
 import org.opensearch.client.opensearch._types.SortOptions;
 import org.opensearch.client.opensearch._types.SortOrder;
 import org.opensearch.client.opensearch._types.query_dsl.MatchPhraseQuery;
 import org.opensearch.client.opensearch._types.query_dsl.Query;
 import org.opensearch.client.opensearch._types.query_dsl.RangeQuery;
+import org.opensearch.client.opensearch._types.query_dsl.TermsQuery;
 import org.opensearch.client.opensearch._types.query_dsl.WildcardQuery;
 import org.opensearch.client.opensearch.core.SearchRequest;
 import org.springframework.data.domain.Pageable;
@@ -42,6 +44,7 @@ public SearchRequestBuilder(String indexName, SearchCriteria criteria) {
         any(criteria.getAnyPhrase());
         criteria.getPhraseFields().forEach(this::append);
         criteria.getRangeFields().forEach(this::append);
+        criteria.getArrayFields().forEach(this::append);
     }
 
     private void with(Pageable pageable) {
@@ -74,7 +77,7 @@ private void append(SearchCriteria.PhraseField field) {
         var query = field.isWildcard()
                 ? WildcardQuery.of(w -> w.field(field.getName()).value(field.getValue())).toQuery()
                 : MatchPhraseQuery.of(m -> m.field(field.getName()).query(field.getValue())).toQuery();
-        (field.isMustNot() ? mustNotQueries : shouldQueries).add(query);
+        (field.isMustNot() ? mustNotQueries : mustQueries).add(query);
     }
 
     private void append(SearchCriteria.RangeField<?> field) {
@@ -87,6 +90,17 @@ private void append(SearchCriteria.RangeField<?> field) {
         mustQueries.add(rangeQueryBuilder.build().toQuery());
     }
 
+    private void append(SearchCriteria.ArrayField field) {
+        if (field == null || field.getValues().isEmpty()) {
+            return;
+        }
+        var query = TermsQuery.of(t -> t.field(field.getName())
+                .terms(terms -> terms.value(field.getValues().stream().map(FieldValue::of).toList()))
+        ).toQuery();
+        mustQueries.add(query);
+    }
+
+
     public SearchRequest build() {
         return new SearchRequest.Builder()
                 .index(indexName)