Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh nung » thanh tung, thanh hung, thanh dung
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
cong pham » cong phan, chong phap, cong ha
nung cao » nang cao, nhung cau, quang cao
cao dung » cao dang, cao dong, cao ung
toan cau » toan cao, toan ban, toan tap
tao cau » tao cu, tao cao, tao sau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - thanh nung cao dung cong pham ((tao cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - thanh nung cao dung cong pham ((tao cau) OR (toan cau)).
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - thanh nung cao dung cong pham ((tao cau) or (toan cau))*.