Improve search speed.

app/Support/Search/SearchInterface.php

@@ -23,6 +23,7 @@ declare(strict_types=1);
 namespace FireflyIII\Support\Search;
 
 use FireflyIII\User;
+use Illuminate\Pagination\LengthAwarePaginator;
 use Illuminate\Support\Collection;
 
 /**
@@ -46,9 +47,9 @@ interface SearchInterface
     public function parseQuery(string $query);
 
     /**
-     * @return Collection
+     * @return LengthAwarePaginator
      */
-    public function searchTransactions(): Collection;
+    public function searchTransactions(): LengthAwarePaginator;
 
     /**
      * @param int $limit