Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
toc chieu » toc thieu, doc hieu, hoc thieu
cong ngan » cong ngang, cong nhan, dong ngan
cong nhat » cong nhan, cong ha, cong suat
cong duc » cong suc, hong duc, cong dac
duc dung » duc hung, duc cuong, duc trung

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc chieu sach - thanh cong duc dung ((cong ngan) or (cong nhat)) chung cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc chieu sach - thanh cong duc dung ((cong ngan) OR (cong nhat)) chung cu.
• Adding a wildcard symbol may retrieve word variants: toc chieu sach - thanh cong duc dung ((cong ngan) or (cong nhat)) chung cu*.