Perhaps you should try some spelling variations:
chiet tach » chieu sach
nhung cong » dung cong, thong cong, hang cong
doi chiet » doi chieu, doi chi, doi viet
tranh cua » doanh cua, manh cua
cua nhung » va nhung
than phan » thanh phan, thanh pham, thanh nhan
toan phan » thanh phan, toan ban, hoa phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chiet tach - canh tranh cua nhung cong ((than phan) or (toan phan)) cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chiet tach - canh tranh cua nhung cong ((than phan) OR (toan phan)) cac.
• Adding a wildcard symbol may retrieve word variants: doi chiet tach - canh tranh cua nhung cong ((than phan) or (toan phan)) cac*.