Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
canh trinh » canh tranh, hanh trinh, canh tinh
nhung cong » dung cong, thong cong, hang cong
mot chieu » doi chieu, ho chieu
trinh van » trinh han, trinh quan, trinh toan
van nhung » van nhuong, va nhung, van hung
chinh cau » chinh chau, chinh ca, chinh can
cong san » cong tac
chan cau » phan cau, can cau, nhanh cau

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)) xanh - canh trinh van nhung cong san ((chan cau) OR (chinh cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (theo chieu)) xanh - canh trinh van nhung cong san ((chan cau) OR (chinh cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) or (theo chieu)) xanh - canh trinh van nhung cong san ((chan cau) OR (chinh cau))".
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (theo chieu)) xanh - canh trinh van nhung cong san ((chan cau) OR (chinh cau))*.