Perhaps you should try some spelling variations:
chinh doanh » kinh doanh
hanh doanh » hang doanh, doanh doanh, kinh doanh
nhung dang » nhung lang, nhung dung, nhung bang
hieu sach » chieu sach, hieu cach, dien sach
cua nhung » va nhung
doc hieu » toc thieu, hoc thieu, hoc hien
van van » van ban, san van, van vat
tan van » tran van, tang van, luan van

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sach - ((chinh doanh) OR (hanh doanh)) cua nhung dang ((van van) OR (tan van)) ban~.
• Adding a wildcard symbol may retrieve word variants: doc hieu sach - ((chinh doanh) or (hanh doanh)) cua nhung dang ((van van) or (tan van)) ban*.