Perhaps you should try some spelling variations:
chinh doanh » kinh doanh
hanh doanh » hang doanh, doanh doanh, kinh doanh
nhung bang » nhung lang, nhung bong, nhung cang
hoc thieu » toc thieu, hoc hien
doc hieu » toc thieu, hoc hien
bang van » dang van, tang van, lang van
van tan » van tuan, van ban, van tai
tan ban » toan ban, tang ban, van ban

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) OR (hoc thieu)) sach - ((chinh doanh) OR (hanh doanh)) va nhung bang van tan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) OR (hoc thieu)) sach - ((chinh doanh) or (hanh doanh)) va nhung bang van tan ban~".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) OR (hoc thieu)) sach - ((chinh doanh) or (hanh doanh)) va nhung bang van tan ban*.