Perhaps you should try some spelling variations:
thi chieu » thi chien, thi hieu, theo chieu
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
tranh su » trinh su, trang su, tranh cua
cong dan » cong san, cong tan, huong dan
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: ((thi chieu) or (ho chieu)) tinh - canh tranh su dung cong dan ((chan cau) or (can cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thi chieu) OR (ho chieu)) tinh - canh tranh su dung cong dan ((chan cau) OR (can cau)).
• Adding a wildcard symbol may retrieve word variants: ((thi chieu) or (ho chieu)) tinh - canh tranh su dung cong dan ((chan cau) or (can cau))*.