Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
doi chieu » doc hieu, doi chi, ho chieu
cong cong » cong dong, trong cong, dang cong
dung cong » dung trong
tung cua » trung cua, tuong cua, dung cua
ban khan » ban nhan, ban chan, ban thanh
ban than » ban thanh, van thanh, ban hang

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: doi chieu sach - thanh tung cua ((cong cong) OR (dung cong)) ((ban khan) OR (ban than)) cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - thanh tung cua ((cong cong) or (dung cong)) ((ban khan) OR (ban than)) cap~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh tung cua ((cong cong) or (dung cong)) ((ban khan) OR (ban than)) cap*.