Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
canh thanh » canh tranh, danh thanh, anh thanh
cang thang » cong thanh, dang thanh
bang cong » dang cong, bang song, dung cong
hang cong » dang cong, hang nong, thanh cong
thang cap » thong cap, than cap, trung cap
ho chieu » theo chieu, hoc thieu, doi chieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - canh thanh san ((bang cong) or (hang cong)) cang thang cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - canh thanh san ((bang cong) OR (hang cong)) cang thang cap.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - canh thanh san ((bang cong) or (hang cong)) cang thang cap*.