Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
cua nhung » va nhung
doi hieu » doi chieu, doc hieu, doi hien
van manh » van minh, van anh, van hanh
manh cua » doanh cua, ban cua
cong tac » cong ty
phan cau » phan dau, phan cac, phan tu

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 - van manh cua nhung ((cong san) or (cong tac)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi hieu lang - van manh cua nhung ((cong san) OR (cong tac)) phan cau.
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - van manh cua nhung ((cong san) or (cong tac)) phan cau*.