Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong tac » cong ty
phan cau » phan dau, phan tu, phan lap
phan cac » nhan cach, phan dau, phan lap
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 - canh tranh cua nhung ((cong san) or (cong tac)) ((phan cau) or (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - canh tranh cua nhung ((cong san) OR (cong tac)) ((phan cau) OR (phan cac)).
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - canh tranh cua nhung ((cong san) or (cong tac)) ((phan cau) or (phan cac))*.