Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
mot chieu » doi chieu, ho chieu
trinh va » trinh van, trinh vat, trinh ve
cong san » cong tac
hang cau » hang dau, nhung cau, nang cao
hang ca » hang va, nang cao, hang tai

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