Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trong tuan » trong quan, trung tuan, trong tan
trang tan » trang tuan, trong tan, tran tan
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
van tan » van tuan, van ban, van thanh
van tai » von tai, van tuan

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((trang tan) OR (trong tuan)) dung cong ((van tan) OR (van tai)) cua~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh ((trang tan) or (trong tuan)) dung cong ((van tan) OR (van tai)) cua~".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((trang tan) or (trong tuan)) dung cong ((van tan) OR (van tai)) cua*.