Perhaps you should try some spelling variations:
luong cong » dung cong, trong cong, cong cong
tranh van » tran van, trinh van, thanh van
van luong » van duong, van cuong, nang luong
ho trieu » mot trieu, 25 trieu, ho chieu
30 trieu » 25 trieu
cong van » cong vang, cong san, song van
ban cau » bang cau, ban can, van cau

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

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