cac bac cho hoi , met conqer ban 1.0 dung de ep lv ,soc . vay ban 2.0 moi co con hieu luc voi cong dung do khong vay? . nb can giup do , ty truoc nha . ___________Auto Merge________________ . khong biet co ep len duoc do soc nhu luc truoc khong .