Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
chieu tinh » trieu tinh, lieu tinh, chau tinh
thanh dung » thanh duong, thanh tung, thanh hung
dung cong » dung trong
dung cua » dung luan, dung cho
cua dung » cua dang, cua dong, qua dung
tan toan » tan tran, van toan, dan toan
tap toan » tap doan, tap quan, bai toan

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 (chieu tinh)) - thanh dung cua dung cong ((tan toan) OR (tap toan)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) or (chieu tinh)) - thanh dung cua dung cong ((tan toan) OR (tap toan)) cau~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (chieu tinh)) - thanh dung cua dung cong ((tan toan) OR (tap toan)) cau*.