Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hieu lang » chieu sang, hieu quang, nhieu tang
trinh cua » tinh cua, trinh luat, trinh quan
cong san » cong tac
cong tan » cong tac, cong thanh, cong ty
than cau » toan cau, phan cau, than cap
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 - hanh trinh cua cong ((cong san) or (cong tan)) than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - hanh trinh cua cong ((cong san) OR (cong tan)) than cau.
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - hanh trinh cua cong ((cong san) or (cong tan)) than cau*.