Perhaps you should try some spelling variations:
khung hoang » phuong hoang
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
hanh khung » hanh nhung, chinh khung, khanh phung
vuong cong » luong cong, duong cong, cuong cong
ban thanh » ban hanh, ban hang
ban than » van thanh, ban hang, ban hanh

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 khung hoang vuong cong ((ban than) or (ban thanh)) man~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh khung hoang vuong cong ((ban than) OR (ban thanh)) man.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh khung hoang vuong cong ((ban than) or (ban thanh)) man*.