Perhaps you should try some spelling variations:
hanh dung » thanh dung, anh dung, hanh dong
hung cong » nhung cong, hung cuong, phung cong
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
dung van » duong van, dung va, dang van
van hung » van dung, manh hung, van duong
dan toan » van toan, dan than, manh toan

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 chu sach - hanh dung van hung cong ((dan toan) OR (anh tuan)) cau~.
• Adding a wildcard symbol may retrieve word variants: theo chu sach - hanh dung van hung cong ((dan toan) or (anh tuan)) cau*.