Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
cang thang » dang thanh
cong thanh » dong thanh, cong trinh, cong tan
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
dan thi » dang thi, dinh thi, dan thuc

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 - ((cang thang) OR (cong thanh)) cua dung cong ((dan thi) OR (tran thi)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - ((cang thang) OR (cong thanh)) cua dung cong ((dan thi) or (tran thi)) cao~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - ((cang thang) OR (cong thanh)) cua dung cong ((dan thi) or (tran thi)) cao*.