ga vit thi van la ga vit thoi balasat oi, cai tran di tien ma cap tan trung binh wa loi thoi roi ma CUONG dau to van mang ra su dung thi hoi bi buon cuoi, cha wa la cac cao thu xem thuong tran do nen o nghien cuu do thoi chu co chi mo rang rua gi dau, o nghien cuu thi thua la chuyen binh thuong, su that thi CUONG dau to danh co o muc tam tam bac trung thoi ---->day moi la su that