Perhaps you should try some spelling variations:
nhung tang » nhung lang, nhung bang, nhung cang
hanh doanh » hang doanh, chinh doanh, doanh doanh
chi sach » chinh sach, chieu sach, co sach
tang van » dang van, hoang van, trong van
doi chi » doi khi
van tan » van tuan, van ban, van tai
tan ban » toan ban, tang ban, van ban
kinh » dinh, minh

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: doi chi sach - ((kinh doanh) OR (hanh doanh)) va nhung tang van tan ban~.
• Adding a wildcard symbol may retrieve word variants: doi chi sach - ((kinh doanh) or (hanh doanh)) va nhung tang van tan ban*.