Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
doan phan » doanh phan, toan phan, dan phan
ho chieu » theo chieu, hoc thieu, doi chieu
tranh va » tranh van, trang va, trinh va
dam phan » d phan, va phan, van phan

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 tranh va nhung cong ((dam phan) or (doan phan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - canh tranh va nhung cong ((dam phan) OR (doan phan)) cau*.