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
cac phong » cac phuong, cac chuong, chau phong
xuong dan » huong dan, xuong san, nguong dan
tuong dan » huong dan, tung dan, truong dai
tung cac » dung cac, vung cac, cung cac
chan cau » can cau, chinh cau, nhanh cau
phan cau » phan dau, phan cac, phan tu

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 cac phong ((xuong dan) OR (tuong dan)) ((chan cau) OR (phan cau))~.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh tung cac phong ((xuong dan) or (tuong dan)) ((chan cau) or (phan cau))*.