Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh toan, thanh tra
tran cuong » tan cuong, tran cong, tran tuong
cuong dung » tuong duong, ung dung, thong dung
cuong bang » muong bang, tuong bang, phuong bang
cong bang » dong bang, hong bang, cong lang
hieu cua » hieu qua, dieu cua, bieu cua
toan tap » toan ban
hieu ca » hieu cac, hieu va, hieu xa

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 ((hieu ca) OR (hieu cua)) - thanh tran cuong dung ((cong bang) OR (cuong bang)) toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu ca) or (hieu cua)) - thanh tran cuong dung ((cong bang) OR (cuong bang)) toan tap~".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu ca) or (hieu cua)) - thanh tran cuong dung ((cong bang) OR (cuong bang)) toan tap*.