Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
lanh manh » lanh tranh, lan anh, van manh
cua nhung » va nhung
doi hieu » doi chieu, doc hieu, doi hien
manh cua » doanh cua, ban cua
than cau » toan cau, phan cau, than cap
phan dau » phan tu, hang dau

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