Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
doi chieu » doc hieu, doi chi, ho chieu
hoc thieu » toc thieu, hoc hien
quan hang » quan hoang, quan lang, quan hanh
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
toan cau » toan cao, toan ban, toan tap

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 (hoc thieu)) xanh - hanh trinh quan hang ((cong tan) OR (cong tac)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (hoc thieu)) xanh - hanh trinh quan hang ((cong tan) OR (cong tac)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (hoc thieu)) xanh - hanh trinh quan hang ((cong tan) OR (cong tac)) toan cau".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (hoc thieu)) xanh - hanh trinh quan hang ((cong tan) OR (cong tac)) toan cau*.