Perhaps you should try some spelling variations:
thanh tran » thanh trang, thanh toan, thanh tra
hieu xanh » chieu xanh, hieu manh, hieu nganh
tran tuan » tran xuan, tran quang, tran thanh
tuan dang » tran dang, tuan bang, tuan dung
dang cong » dung cong
doc hieu » toc thieu, hoc thieu, hoc hien
van than » van thanh, van thang, van tuan

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 xanh - thanh tran tuan dang cong ((van than) OR (dan ca)) cau~.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - thanh tran tuan dang cong ((van than) or (dan ca)) cau*.