Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
thanh dung » thanh duong, thanh tung, thanh hung
hanh dung » anh dung, hanh dong, manh dung
hang cong » dang cong, hang nong, bang cong
cua hang » cua dang, cua nhung, cua cong
dan than » dan chan, van than, dan toan
ban than » ban thanh, van thanh, ban hang

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