Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
hanh tranh » canh tranh, hanh trinh, hanh trang
thi chieu » thi chien, thi hieu, thi hien
cua hang » cua nhung, cua cong, cua ban
cua dang » cua cong, cua ban
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
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 (thi chieu)) xanh - hanh tranh ((cua hang) OR (cua dang)) cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (thi chieu)) xanh - hanh tranh ((cua hang) OR (cua dang)) cong tac toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (thi chieu)) xanh - hanh tranh ((cua hang) OR (cua dang)) cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (thi chieu)) xanh - hanh tranh ((cua hang) OR (cua dang)) cong tac toan cau*.