Do la chuyen cua ho, toi thi tu hoc va tu lau chang them de y den ai ca, that bai di nhien la co, nhieu hay it thi chi co toi biet va toi chang bao h hanh xu nhu vay ca. Va neu tu nhan la nguoi co kinh nghiem thi cung phai biet rang, trong trading , su dung tu "neu" thi cai gi cung co the lam...