Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trung tuan » trung thanh, trung tam, tran tuan
trong toan » truong toan, trong tan, trong hoan
hoc chieu » hoc thieu, ho chieu, hoc hien
san thanh » ban thanh, van thanh, son thanh
ban cong » bang cong, van cong, phan cong
san than » sang than, ban than, van than

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: hoc chieu sach - thanh ((trung tuan) OR (trong toan)) ban cong ((san than) OR (san thanh)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - thanh ((trung tuan) or (trong toan)) ban cong ((san than) OR (san thanh)) cau~".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - thanh ((trung tuan) or (trong toan)) ban cong ((san than) OR (san thanh)) cau*.