Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
trung can » trung van, trong can, trung ca
trung cap » truong cao, trung tam
bac thanh » ban thanh, cac thanh, tai thanh
thanh cha » thanh ha, thanh nha, thanh phan
cong bac » cong tac, dong bac, cong cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sach - thanh ((trung can) or (trung cap)) trong cong bac thanh cha~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - thanh ((trung can) OR (trung cap)) trong cong bac thanh cha.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - thanh ((trung can) or (trung cap)) trong cong bac thanh cha*.