Perhaps you should try some spelling variations:
theo chieu » ho chieu, theo chu, thi chieu
tranh ban » trinh ban, tranh hang, tranh luan
dung cong » dung trong
ban dung » van dung, dan dung, tan dung
cong tan » cong tac, cong san, cong thanh
tran cau » tran chau, ran cau, tra cau
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 tieu)) xanh - canh tranh ban dung cong tan ((tran cau) OR (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo tieu)) xanh - canh tranh ban dung cong tan ((tran cau) OR (toan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (theo tieu)) xanh - canh tranh ban dung cong tan ((tran cau) OR (toan cau))".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo tieu)) xanh - canh tranh ban dung cong tan ((tran cau) OR (toan cau))*.