Perhaps you should try some spelling variations:
thanh mang » thanh hang, hanh mang, nhanh mang
cong thanh » dong thanh, cong trinh, truong thanh
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
chua dong » cua dong, ha dong, huy dong
cua dung » cua dang, cua dong, qua dung
cong tan » cong tac, cong san, cong ty

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo hieu lang - thanh mang ((cua dung) or (chua dong)) ((cong tan) or (cong thanh)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - thanh mang ((cua dung) OR (chua dong)) ((cong tan) OR (cong thanh)) van ban.
• Adding a wildcard symbol may retrieve word variants: theo hieu lang - thanh mang ((cua dung) or (chua dong)) ((cong tan) or (cong thanh)) van ban*.