Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trung » thanh trung, hanh trang, danh trung
manh trung » manh tung, thanh trung, manh hung
tuan thong » toan thong, tran thong, tuan phong
hoc chieu » hoc thieu, ho chieu, hoc hien
cong dan » cong tan, huong dan, cong dong
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.

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