Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
trang tuan » tran tuan, trung tuan, trong tuan
trong tan » trong quan, trong cac, trong ca
dung cong » dung trong
cong van » cong vang, cong san, song van
van tan » van tuan, van ban, van tai
tan ca » tan cua, tang ca, dan ca

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) OR (chiet tach)) - hanh ((trong tan) OR (trang tuan)) dung cong van tan ca~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) OR (chiet tach)) - hanh ((trong tan) or (trang tuan)) dung cong van tan ca~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) OR (chiet tach)) - hanh ((trong tan) or (trang tuan)) dung cong van tan ca*.