Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
dung cong » dung trong
ho chieu » hoc thieu, doi chieu, mot chieu
tranh su » trinh su, trang su, tranh cua
cong san » cong tac
chan cau » phan cau, chinh cau, nhanh cau
can cau » van cau, ban cau, ca cau

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 (ho chieu)) tinh - canh tranh su dung cong san ((chan cau) or (can cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) tinh - canh tranh su dung cong san ((chan cau) OR (can cau)).
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (ho chieu)) tinh - canh tranh su dung cong san ((chan cau) or (can cau))*.