Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
tra tuan » tran tuan, tra quan, ta tuan
tri tuan » tri quan, tran tuan, tri tue
tan than » tan thanh, tan tran, tam than
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 chieu sach - thanh ((tra tuan) OR (tri tuan)) dung cong ((tan than) or (ban than)) cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((tra tuan) OR (tri tuan)) dung cong ((tan than) OR (ban than)) cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh ((tra tuan) OR (tri tuan)) dung cong ((tan than) or (ban than)) cap".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((tra tuan) OR (tri tuan)) dung cong ((tan than) or (ban than)) cap*.