cant get some wilaya when using searchWilayatByName function

[Hichemhino]

Im trying to get some wilaya based on pattern but its not working, there is the code snippet :
`List getWilayaSuggestionUsingPattern(
String pattern,
) {
if(pattern.isEmpty){
return [];
}
final wilayas = dzair.searchWilayatByName(pattern, language) ?? [];

List<String> wilayasSuggestion = [];

wilayasSuggestion.addAll(
  wilayas.map((e) => e!.getWilayaName(language)!)
);

return wilayasSuggestion;

}`
for example if i enter "chent" to get "Ain-Temouchent" => i get nothing both in arabic and english.