Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
theo hieu » theo tieu, thien hieu, thuc hieu
dung cong » dung trong
trung ap » trung cap, trung lap, trung tam
dan than » dan chan, van than, dan toan
ban than » ban thanh, van thanh, ban hang
ap dung » xay dung, van dung

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo hieu) OR (theo chieu)) lang - thanh trung ap dung cong ((dan than) OR (ban than)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo hieu) OR (theo chieu)) lang - thanh trung ap dung cong ((dan than) or (ban than)) cau~".
• Adding a wildcard symbol may retrieve word variants: ((theo hieu) OR (theo chieu)) lang - thanh trung ap dung cong ((dan than) or (ban than)) cau*.