Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
trung tuan » trung thanh, trung tam, tran tuan
hoc chieu » hoc thieu, ho chieu, hoc hien
trung cua » truong cua, trung cap, dung cua
cong cong » trong cong, dung cong, dang cong
tac thanh » bac thanh, cac thanh, tcc thanh
thanh cha » thanh ha, thanh nha, thanh phan

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 - hanh ((trung cua) or (trung tuan)) ((cong cong) OR (cong dong)) tac thanh cha~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh ((trung cua) OR (trung tuan)) ((cong cong) OR (cong dong)) tac thanh cha.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - hanh ((trung cua) or (trung tuan)) ((cong cong) OR (cong dong)) tac thanh cha".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh ((trung cua) or (trung tuan)) ((cong cong) OR (cong dong)) tac thanh cha*.