Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
theo chieu » theo tieu, ho chieu, theo chu
trinh quan » tinh quang, trinh luat, trinh han
cong cong » cong dong, dung cong, dang cong
theo yeu » theo tieu, thiet yeu, theo chu
van toan » van tuan, van tan, van thanh
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: ((theo chieu) or (theo yeu)) xanh - hanh trinh quan ((cong cong) OR (trong cong)) van toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo yeu)) xanh - hanh trinh quan ((cong cong) OR (trong cong)) van toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (theo yeu)) xanh - hanh trinh quan ((cong cong) OR (trong cong)) van toan cau".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo yeu)) xanh - hanh trinh quan ((cong cong) OR (trong cong)) van toan cau*.