Perhaps you should try some spelling variations:
thien hieu » thien nhien, thien chien, thien hue
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
tung cua » trung cua, tuong cua, dung cua
cong tac » cong ty
tac than » tac thanh, tam than, tac nhan
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: thien hieu lang - thanh ((tung cua) or (dung luan)) nhung cong tac than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thien hieu lang - thanh ((tung cua) OR (dung luan)) nhung cong tac than cap.
• Adding a wildcard symbol may retrieve word variants: thien hieu lang - thanh ((tung cua) or (dung luan)) nhung cong tac than cap*.