Perhaps you should try some spelling variations:
nhung chong » nhung cong, nhung phong, nhung phuong
hanh tran » hanh trang, thanh tran, hanh tram
hung cong » nhung cong, hung cuong, phung cong
ho trieu » mot trieu, 25 trieu, ho chieu
30 trieu » 25 trieu
tran van » luan van
van toan » van tuan, van tan, van thanh
toan ban » van ban

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 (30 trieu)) tinh - hanh tran van ((hung cong) OR (nhung chong)) van toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho trieu) OR (30 trieu)) tinh - hanh tran van ((hung cong) or (nhung chong)) van toan ban~".
• Adding a wildcard symbol may retrieve word variants: ((ho trieu) OR (30 trieu)) tinh - hanh tran van ((hung cong) or (nhung chong)) van toan ban*.