Perhaps you should try some spelling variations:
dung cong » dung trong
ban thanh » ban hanh, ban hang
thanh cau » thanh chau, thanh mau, nhanh cau
10 trieu » 20 trieu, 40 trieu, 50 trieu
cong cua » cong cu, dong cua, huong cua
cua dung » cua dang, cua dong, qua dung
cong ban » cong bang, cong san, cong tan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((((10 trieu) or (25 trieu))) or (30 trieu)) tinh - thanh cong cua dung cong ban thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((10 trieu) OR (25 trieu))) OR (30 trieu)) tinh - thanh cong cua dung cong ban thanh cau.
• Adding a wildcard symbol may retrieve word variants: ((((10 trieu) or (25 trieu))) or (30 trieu)) tinh - thanh cong cua dung cong ban thanh cau*.