Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
cong doanh » cong doan, dong doanh, rong doanh
doi chieu » doc hieu, doi chi, mot chieu
ca thuong » cao thuong, cua thuong, va thuong
cong danh » cuong danh, cong dan, cong thanh
dang dan » dang dang, dang van, dung dan
thanh tu » hanh tu, nhanh tu, thanh tung

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 - dang dan ca thuong ((cong doanh) or (cong danh)) thanh tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - dang dan ca thuong ((cong doanh) OR (cong danh)) thanh tu*.