Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
theo chieu » theo tieu, theo chu, thi chieu
hanh trinh » canh tranh, hanh chinh
ho chieu » hoc thieu, doi chieu, mot chieu
trinh va » trinh van, trinh vat, trinh ve
cong tan » cong tac, cong san, cong thanh
toan cao » toan ban
toan tap » toan ban

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

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