Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
nhung cong » dung cong, thong cong, hang cong
doi chieu » doi chi, ho chieu, mot chieu
doanh cua » doanh luan
cua nhung » va nhung
doc hieu » toc thieu, hoc thieu, hoc hien
cong tan » cong tac, cong san, cong thanh
phan dau » hang dau

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

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