Vietnamese letters

[A-Za-z-0-9ÀÁÂÃÈÉÊẾÌÍÒÓÔÕÙÚĂĐĨŨƠàáâãèéêếìíòóôõùúăđĩũơƯĂẠẢẤẦẨẪẬẮẰẲẴẶẸẺẼỀỀỂưăạảấầẩẫậắằẳẵặẹẻẽềềểỄỆỈỊỌỎỐỒỔỖỘỚỜỞỠỢỤỦỨỪễệỉịọỏốồổỗộớờởỡợụủứừỬỮỰỲỴÝỶỸửữựỳỵýỷỹ\s]+

Korean letters

[\x{3130}-\x{318F}\x{AC00}-\x{D7AF}]+