Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh tra, thanh tuan
thanh toan » thanh hoa, thanh san, tinh toan
nhung cong » dung cong, thong cong, hang cong
dien sach » dien anh
hieu cach » hieu cac, chieu sach, hieu ca
van nhung » van nhuong, va nhung, van hung
cong san » cong tac
san toan » van toan, dan toan, manh toan
toan cau » toan cao, toan ban, toan tap

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: doc ((dien sach) OR (hieu cach)) - ((thanh tran) OR (thanh toan)) van nhung cong san toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((dien sach) or (hieu cach)) - ((thanh tran) OR (thanh toan)) van nhung cong san toan cau~".
• Adding a wildcard symbol may retrieve word variants: doc ((dien sach) or (hieu cach)) - ((thanh tran) OR (thanh toan)) van nhung cong san toan cau*.