I set standart umbraco search, but it cannot find nodes in arabic language How I can fix it?

var searcher = ExamineManager.Instance; var searchCriteria = searcher.CreateSearchCriteria(); var query = searchCriteria.GroupedOr(new[] { "nodeName", "name", "productDescription", "metaDescription" }, searchTerm).Compile(); var searchResults = searcher.Search(query).Where(r => r["__IndexType"] == "content").ToList();