Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, doi chi, mot chieu
trinh vat » trinh van, trinh luat, sinh vat
ho chieu » theo chieu, hoc thieu, mot chieu
vat dang » van dang, vat dung, va dang
cong tac » cong ty
toan tap » toan ban

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

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