Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
hanh dung » thanh dung, anh dung, hanh dong
luan dang » luan nang, luan danh, luan dong
dang cong » dung cong
dan toan » van toan, dan than, manh toan
ban than » ban thanh, van thanh, ban hang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - hanh dung luan dang cong ((dan toan) or (ban than)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh dung luan dang cong ((dan toan) OR (ban than)) cao.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh dung luan dang cong ((dan toan) or (ban than)) cao*.