Perhaps you should try some spelling variations:
thanh thuong » thanh huong, thanh chuong, thanh phuong
thuong thuat » thuong thuyet, thuong thuc, trong thuat
thuat nhung » thuat hung, thuat chung, thuat chuong
cau sach » cao sach, hau sach, khau sach
rau sach » hau sach, khau sach, nam sach
cong dan » cong san, cong tan, cong dong

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: theo ((cau sach) OR (rau sach)) - thanh thuong thuat nhung ((cong dan) OR (huong dan)) van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((cau sach) or (rau sach)) - thanh thuong thuat nhung ((cong dan) OR (huong dan)) van ban~".
• Adding a wildcard symbol may retrieve word variants: theo ((cau sach) or (rau sach)) - thanh thuong thuat nhung ((cong dan) OR (huong dan)) van ban*.