Ham - Ham thay the dong thoi nhieu ky tu

public static String XuLyDau(String chuoi){
        chuoi = chuoi.replaceAll("á|à|ả|ã|ạ|ă|ắ|ặ|ằ|ẳ|ẵ|â|ấ|ầ|ẩ|ẫ|ậ","a").replaceAll("é|è|ẻ|ẽ|ẹ|ê|ế|ề|ể|ễ|ệ", "e").replaceAll("í|ì|ỉ|ĩ|ị", "i").replaceAll("ó|ò|ỏ|õ|ọ|ô|ố|ồ|ổ|ỗ|ộ|ơ|ớ|ờ|ở|ỡ|ợ", "o").replaceAll("ú|ù|ủ|ũ|ụ|ư|ứ|ừ|ử|ữ|ự", "u").replaceAll("ý|ỳ|ỷ|ỹ|ỵ","y").replaceAll("đ","d")
                .replaceAll("Á|À|Ả|Ã|Ạ|Ă|Ắ|Ẳ|Ằ|Ẳ|Ẵ|Â|Ấ|Ầ|Ẩ|Ẫ|Ậ","A").replaceAll("É|È|Ẻ|Ẽ|Ẹ|Ê|Ế|Ề|Ể|Ễ|Ệ", "E").replaceAll("Í|Ì|Ỉ|Ĩ|Ị", "I").replaceAll("Ó|Ò|Ỏ|Õ|Ọ|Ô|Ố|Ồ|Ổ|Ỗ|Ộ|Ơ|Ớ|Ờ|Ở|Ỡ|Ợ", "O").replaceAll("Ú|Ù|Ủ|Ũ|Ụ|Ư|Ứ|Ừ|Ử|Ữ|Ự", "U").replaceAll("Ý|Ỳ|Ỷ|Ỹ|Ỵ","Y").replaceAll("Đ","D");
        return chuoi ;
    }