Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
van nhuong » van chuong, van phuong, van huong
tan khang » van khang, tao khang, tinh khang
ho chieu » theo chieu, hoc thieu, doi chieu
van hung » van dung, manh hung, van duong
tan hang » ban hang, van hang, gan 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 - canh tranh ((van nhuong) or (van hung)) cong ((tan hang) OR (tan khang)) dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - canh tranh ((van nhuong) OR (van hung)) cong ((tan hang) OR (tan khang)) dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - canh tranh ((van nhuong) or (van hung)) cong ((tan hang) OR (tan khang)) dau".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - canh tranh ((van nhuong) or (van hung)) cong ((tan hang) OR (tan khang)) dau*.