Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
lanh manh » lanh tranh, lan anh, anh anh
cua nhung » va nhung
thanh lap » thanh san, phan lap, thanh hai
doi hieu » doi chieu, doc hieu, doi hien
van manh » van minh, van anh, van hanh
cong tan » cong tac, cong san, cong thanh
than cau » toan cau, phan cau, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi hieu lang - ((lanh manh) or (van manh)) cua nhung cong tan ((than cau) or (thanh lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi hieu lang - ((lanh manh) OR (van manh)) cua nhung cong tan ((than cau) OR (thanh lap)).
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - ((lanh manh) or (van manh)) cua nhung cong tan ((than cau) or (thanh lap))*.