Perhaps you should try some spelling variations:
dung cong » dung trong
30 trieu » 25 trieu
canh van » can van, cach van, canh dan
cua dung » cua dang, cua dong, qua dung
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan ban, toan tai
toan tap » toan ban
anh van » anh va, thanh van, doanh van

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: 30 trieu tinh - ((canh van) OR (anh van)) cua dung cong dan ((toan cau) OR (toan tap))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "30 trieu tinh - ((canh van) or (anh van)) cua dung cong dan ((toan cau) OR (toan tap))~".
• Adding a wildcard symbol may retrieve word variants: 30 trieu tinh - ((canh van) or (anh van)) cua dung cong dan ((toan cau) OR (toan tap))*.