Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh huong » thanh huong, anh huong, manh huong
huong cua » dung cua
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
cua dung » cua dang, cua dong, qua dung
tan than » tan thanh, tan tran, ban than
ban hang » ngan 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 chieu sach - hanh huong cua dung cong ((tan than) or (ban hang)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh huong cua dung cong ((tan than) OR (ban hang)) ban.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh huong cua dung cong ((tan than) or (ban hang)) ban*.