Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
hanh trung » hanh trang, manh trung, danh trung
hoc chieu » hoc thieu, ho chieu, hoc hien
cua tong » cua cong, cua dong, cua nong
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty

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 (thanh trung)) cua tong ((cong tan) OR (cong tac)) van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - ((hanh trung) OR (thanh trung)) cua tong ((cong tan) or (cong tac)) van ban~".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - ((hanh trung) OR (thanh trung)) cua tong ((cong tan) or (cong tac)) van ban*.