Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
mot chieu » doi chieu, ho chieu
hanh mang » nhanh mang, hanh trang, nhanh lang
cua khong » cua phuong, cua thuong, cua cong
hua khong » hoa khong, hoac khong, phuc khong
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than cao » toan cao, thai cao, than cap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (theo chieu)) tinh - hanh mang ((cua khong) OR (hua khong)) cong tan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (theo chieu)) tinh - hanh mang ((cua khong) OR (hua khong)) cong tan than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) or (theo chieu)) tinh - hanh mang ((cua khong) OR (hua khong)) cong tan than cao".
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (theo chieu)) tinh - hanh mang ((cua khong) OR (hua khong)) cong tan than cao*.