Perhaps you should try some spelling variations:
chinh doanh » kinh doanh
luan nhung » luan hung, quan nhung, luan phuong
luan chung » luan chinh
hieu sach » chieu sach, hieu cach, dien sach
doc hieu » toc thieu, hoc thieu, hoc hien
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
phan cac » nhan cach, phan dau, phan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu sach - chinh doanh ((luan nhung) OR (luan chung)) ((cong dan) or (cong tan)) phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sach - chinh doanh ((luan nhung) OR (luan chung)) ((cong dan) OR (cong tan)) phan cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu sach - chinh doanh ((luan nhung) OR (luan chung)) ((cong dan) or (cong tan)) phan cac".
• Adding a wildcard symbol may retrieve word variants: doc hieu sach - chinh doanh ((luan nhung) OR (luan chung)) ((cong dan) or (cong tan)) phan cac*.