Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trung » thanh trung, hanh trang, manh trung
hoc chieu » hoc thieu, ho chieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
cua thong » cua thuong, cua khong, cua tong
cong san » cong tac
chan ban » can ban, chat ban, chan nan

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 thong ((cong dong) or (cong san)) chan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh trung cua thong ((cong dong) OR (cong san)) chan ban.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh trung cua thong ((cong dong) or (cong san)) chan ban*.