Perhaps you should try some spelling variations:
cuong dung » tuong duong, ung dung, thong dung
cho chinh » chon chinh, che chinh, cuoc chinh
tranh van » tran van, trinh van, thanh van
trinh vat » trinh van, trinh luat, sinh vat
dung dan » dung dat, dung san, tung dan
chan cau » phan cau, can cau, chinh cau
ban cau » bang cau, ban can, van 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: cho chinh sach - canh ((tranh van) OR (trinh vat)) cuong dung dan ((chan cau) OR (ban cau))~.
• Adding a wildcard symbol may retrieve word variants: cho chinh sach - canh ((tranh van) or (trinh vat)) cuong dung dan ((chan cau) or (ban cau))*.