Perhaps you should try some spelling variations:
thanh tung » thanh cong
dung cong » dung trong
ho trieu » mot trieu, 30 trieu, ho chieu
25 trieu » 30 trieu
cua dung » cua dang, cua dong, qua dung
cong tan » cong tac, cong san, cong thanh
tan phan » toan phan, than phan, van phan
phan cau » phan dau, phan cac, phan tu

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: ((ho trieu) OR (25 trieu)) tinh - ((thanh tung) OR (thanh trung)) cua dung cong tan phan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho trieu) OR (25 trieu)) tinh - ((thanh tung) or (thanh trung)) cua dung cong tan phan cau~".
• Adding a wildcard symbol may retrieve word variants: ((ho trieu) OR (25 trieu)) tinh - ((thanh tung) or (thanh trung)) cua dung cong tan phan cau*.