Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, ho chieu, mot chieu
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
than cao » toan cao, thai cao, than cap
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) OR (doi chi)) tinh - hanh trinh cua nhung ((cong tan) or (cong san)) than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doi chi)) tinh - hanh trinh cua nhung ((cong tan) OR (cong san)) than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) OR (doi chi)) tinh - hanh trinh cua nhung ((cong tan) or (cong san)) than cao".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) OR (doi chi)) tinh - hanh trinh cua nhung ((cong tan) or (cong san)) than cao*.