Perhaps you should try some spelling variations:
chiet tach » chieu sach
dung cong » dung trong
ho chiet » ho chieu, ho thiet, hoc thiet
cong cua » cong cu, dong cua, huong cua
cua dung » cua dang, cua dong, qua dung
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.

• Performing a fuzzy search may retrieve terms with similar spellings: ho chiet tach - thanh cong cua dung cong ((dan than) or (ban than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chiet tach - thanh cong cua dung cong ((dan than) OR (ban than)) cau.
• Adding a wildcard symbol may retrieve word variants: ho chiet tach - thanh cong cua dung cong ((dan than) or (ban than)) cau*.