Perhaps you should try some spelling variations:
hanh trung » thanh trung, hanh trang, manh trung
thanh lap » thanh san, phan lap, thanh hai
thi hieu » thi chieu, thi hien, thi dieu
theo chu » theo chieu, cho chu, chao chu
trung do » trung bo, trung co, trung du
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac

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: ((thi hieu) OR (theo chu)) xanh - hanh trung do luong ((cong tan) OR (cong san)) thanh lap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thi hieu) or (theo chu)) xanh - hanh trung do luong ((cong tan) OR (cong san)) thanh lap~".
• Adding a wildcard symbol may retrieve word variants: ((thi hieu) or (theo chu)) xanh - hanh trung do luong ((cong tan) OR (cong san)) thanh lap*.