Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh dung » thanh dung, anh dung, hanh dong
nhung don » nhung van, nhung bo
ho chieu » theo chieu, hoc thieu, doi chieu
dung cua » dung luan, dung cho
dan toan » van toan, dan than, manh toan
dan chan » dan gian, dan ca, van chat

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 chieu sach - hanh dung cua ((nhung don) OR (dung trong)) ((dan toan) OR (dan chan)) cau~.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh dung cua ((nhung don) or (dung trong)) ((dan toan) or (dan chan)) cau*.