diff --git a/apps/dnet-exporter-api/src/main/java/eu/dnetlib/openaire/dsm/dao/DatasourceSpecs.java b/apps/dnet-exporter-api/src/main/java/eu/dnetlib/openaire/dsm/dao/DatasourceSpecs.java
index 7fc5958d..dcbb9dba 100644
--- a/apps/dnet-exporter-api/src/main/java/eu/dnetlib/openaire/dsm/dao/DatasourceSpecs.java
+++ b/apps/dnet-exporter-api/src/main/java/eu/dnetlib/openaire/dsm/dao/DatasourceSpecs.java
@@ -1,5 +1,6 @@
 package eu.dnetlib.openaire.dsm.dao;
 
+import java.util.Arrays;
 import java.util.List;
 import java.util.Map.Entry;
 
@@ -55,6 +56,11 @@ public class DatasourceSpecs {
 						case search:
 							expressions.add(likeSearch(ds, cb, e));
 
+							break;
+
+						case multiSearch:
+							expressions.add(likeSearchList(ds, cb, e));
+
 							break;
 						case searchOrgs:
 							// search by case insensitive organization's country
@@ -100,6 +106,11 @@ public class DatasourceSpecs {
 
 							expressions.add(likeSearch(api, cb, e));
 							break;
+
+						case multiSearch:
+							expressions.add(likeSearchList(api, cb, e));
+
+							break;
 						case searchOrgs:
 							throw new DsmRuntimeException("not implemented");
 						}
@@ -117,6 +128,23 @@ public class DatasourceSpecs {
 		return cb.like(cb.lower(r.get(e.getKey().name())), WILDCARD + getValue(e) + WILDCARD);
 	}
 
+	// substring, case insensitive, like based search
+	private static Predicate likeSearchList(final Root<?> r, final CriteriaBuilder cb, final Entry<FilterName, Object> e) {
+		final String key = e.getKey().name();
+
+		log.info("key : " + key);
+		log.info("val : " + e.getValue());
+
+		final Predicate[] arr =
+			Arrays.stream(e.getValue().toString().split(","))
+				.map(String::toLowerCase)
+				.map(s -> cb.like(cb.lower(r.get(key)), WILDCARD + s + WILDCARD))
+				.toArray(size -> new Predicate[size]);
+
+		return cb.or(arr);
+
+	}
+
 	// search by ID, managed. exact match
 	private static Predicate exactSearch(final Root<?> r, final CriteriaBuilder cb, final Entry<FilterName, Object> e) {
 		return cb.equal(r.get(e.getKey().name()), getValue(e));
diff --git a/apps/dnet-exporter-api/src/main/java/eu/dnetlib/openaire/dsm/domain/FilterName.java b/apps/dnet-exporter-api/src/main/java/eu/dnetlib/openaire/dsm/domain/FilterName.java
index c929d920..2dbd67eb 100644
--- a/apps/dnet-exporter-api/src/main/java/eu/dnetlib/openaire/dsm/domain/FilterName.java
+++ b/apps/dnet-exporter-api/src/main/java/eu/dnetlib/openaire/dsm/domain/FilterName.java
@@ -33,9 +33,10 @@ public enum FilterName {
 		case contactemail:
 		case registeredby:
 		case typology:
-		case eoscDatasourceType:
 		case platform:
 			return FilterType.search;
+		case eoscDatasourceType:
+			return FilterType.multiSearch;
 		case country:
 			return FilterType.searchOrgs;
 		default:
diff --git a/apps/dnet-exporter-api/src/main/java/eu/dnetlib/openaire/dsm/domain/FilterType.java b/apps/dnet-exporter-api/src/main/java/eu/dnetlib/openaire/dsm/domain/FilterType.java
index 5d15adfd..a028e350 100644
--- a/apps/dnet-exporter-api/src/main/java/eu/dnetlib/openaire/dsm/domain/FilterType.java
+++ b/apps/dnet-exporter-api/src/main/java/eu/dnetlib/openaire/dsm/domain/FilterType.java
@@ -1,5 +1,8 @@
 package eu.dnetlib.openaire.dsm.domain;
 
 public enum FilterType {
-	exact, search, searchOrgs
+	exact,
+	search,
+	searchOrgs,
+	multiSearch
 }