Perhaps you should try some spelling variations:
theo trieu » theo tieu, theo chieu, thep tieu
thanh dung » thanh duong, thanh tung, thanh hung
luan trong » quan trong, luat trong, luan tuong
hanh dung » anh dung, hanh dong, manh dung
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than

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: theo trieu tinh - ((hanh dung) OR (thanh dung)) luan trong cong ((dan toan) OR (dan than)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo trieu tinh - ((hanh dung) OR (thanh dung)) luan trong cong ((dan toan) or (dan than)) cao~".
• Adding a wildcard symbol may retrieve word variants: theo trieu tinh - ((hanh dung) OR (thanh dung)) luan trong cong ((dan toan) or (dan than)) cao*.