Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thanh ven » thanh vien, thanh van, thanh nien
so trieu » mot trieu, so lieu, su triet
thanh ve » hanh ve, thanh va, thanh vien
cong tan » cong tac, cong san, cong thanh
so dieu » bo dieu, hoc dieu
tan can » toan can, tan van, ban can
can cau » van cau, ban cau, ca cau

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: ((so trieu) OR (so dieu)) tinh - canh ((thanh ve) OR (thanh ven)) nhung cong tan can cau~.
• Adding a wildcard symbol may retrieve word variants: ((so trieu) or (so dieu)) tinh - canh ((thanh ve) or (thanh ven)) nhung cong tan can cau*.