Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
hang cong » dang cong, hang nong, bang cong
trung va » truong va, trang va, trung ha
cong tac » cong ty
tran ban » tranh ban, toan ban, tran bai
tran van » luan van
doi chi » doi khi
va hang » van hang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (doi chi)) xanh - thanh trung va hang cong tac ((tran ban) OR (tran van))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (doi chi)) xanh - thanh trung va hang cong tac ((tran ban) OR (tran van)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (doi chi)) xanh - thanh trung va hang cong tac ((tran ban) OR (tran van))".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (doi chi)) xanh - thanh trung va hang cong tac ((tran ban) OR (tran van))*.