Perhaps you should try some spelling variations:
thanh phuong » thanh huong, thanh chuong, khanh phong
phuong cua » huong cua, phuong cham, chuong chua
hieu lang » chieu sang, hieu quang, nhieu tang
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
ban than » ban thanh, van thanh, ban phap
ban hang » ngan hang
ho hieu » ho chieu, hoi hieu, nho hieu

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - thanh phuong cua dung cong ((((ban than) OR (ban hanh))) OR (ban hang)) cau~.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - thanh phuong cua dung cong ((((ban than) or (ban hanh))) or (ban hang)) cau*.