Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
bang cong » dang cong, bang song, hang cong
nho hieu » nha hieu, nho sieu, nhu hieu
cua bang » chua bang, cua ban, cua dang
cong tac » cong ty
phan dau » phan tu
hang dau » hang va, hang tai
ho hieu » ho chieu, hoi hieu, co hieu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho hieu) OR (nho hieu)) lang - hanh tranh cua bang cong tac ((phan dau) OR (hang dau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho hieu) OR (nho hieu)) lang - hanh tranh cua bang cong tac ((phan dau) or (hang dau))~".
• Adding a wildcard symbol may retrieve word variants: ((ho hieu) OR (nho hieu)) lang - hanh tranh cua bang cong tac ((phan dau) or (hang dau))*.