diff --git a/backend/src/tracker/api/routes/ketten.py b/backend/src/tracker/api/routes/ketten.py
index 0c653ee..3393c87 100644
--- a/backend/src/tracker/api/routes/ketten.py
+++ b/backend/src/tracker/api/routes/ketten.py
@@ -60,8 +60,11 @@ def list_ketten(
         params.append(partei)
 
     if suche:
-        where_clauses.append("k.thema LIKE ?")
-        params.append(f"%{suche}%")
+        where_clauses.append(
+            "(k.thema LIKE ? OR v.aktenzeichen LIKE ? OR v.betreff LIKE ?)"
+        )
+        like = f"%{suche}%"
+        params.extend([like, like, like])
 
     # Global filter: Ratsperiode (filter on letzte_aktivitaet)
     per_clause, per_params = periode_date_filter(periode, "k.letzte_aktivitaet")
@@ -82,7 +85,7 @@ def list_ketten(
     where_sql = ("WHERE " + " AND ".join(where_clauses)) if where_clauses else ""
 
     total = conn.execute(
-        f"SELECT COUNT(*) as cnt FROM ketten k {where_sql}", params
+        f"SELECT COUNT(*) as cnt FROM ketten k LEFT JOIN vorlagen v ON k.ursprung_id = v.id {where_sql}", params
     ).fetchone()["cnt"]
 
     offset = (page - 1) * page_size