static void SplitAndAddSubsAccents(Dictionary <string, List <Adress> > result, Adress a, string searchstring)
        {
            searchstring = searchstring
                           .Trim()
                           .ToLowerInvariant()
                           .Replace(".", "");

            SplitAndAdd(result, a, searchstring);

            if (searchstring.Contains("é") || searchstring.Contains("ü"))
            {
                SplitAndAdd(result, a, searchstring.Replace("é", "e").Replace("ü", "u"));
            }
        }