Perhaps you should try some spelling variations:
truong quan » trong quan, luong quan, truong van
luong cong » dung cong, trong cong, cong cong
hieu lang » chieu sang, hieu quang, nhieu tang
san thanh » ban thanh, van thanh, son thanh
thanh cap » thanh lap, hanh cap, than cap
cong san » cong tac
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - thanh ((truong quan) or (thong quan)) luong cong san thanh cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - thanh ((truong quan) OR (thong quan)) luong cong san thanh cap.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - thanh ((truong quan) or (thong quan)) luong cong san thanh cap*.