Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
theo chieu » theo tieu, theo chu, thi chieu
trinh van » trinh han, trinh quan, trinh toan
ho chieu » hoc thieu, doi chieu, mot chieu
trinh va » trinh vat, trinh ve, trinh vi
cong san » cong tac
san than » sang than, san thanh, ban than
than cap » khan cap, thanh lap, thanh cac

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