QSqlTableModel, filter and spec. characters

I’m using exisiting SQLITE database and QSqlTableModel. My database tables have “special and latin characters” (č,ć.đ…), and select() return it all, but with setFilter() I have some problems. I read somewhere special characters are case-insensitive in filter. What to do with it? Example: title: ČEHOV sqlModel->setFilter(“title LIKE ‘č’”) // resault: sqlModel->setFilter(“title LIKE ‘Č’”) // resault: ČEHOV