Perhaps you should try some spelling variations:
canh doanh » hanh doanh, chinh doanh, doanh doanh
cong thanh » dong thanh, cong trinh, truong thanh
doanh cua » doanh luan
cua nhung » va nhung
hieu cac » hieu va, hieu van, vien cac
hieu luc » hieu luat, hieu qua
cong tan » cong tac, cong san, cong ty
phan dau » phan tu, 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: doc ((hieu cac) OR (hieu luc)) - canh doanh cua nhung ((cong tan) or (cong thanh)) phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu cac) OR (hieu luc)) - canh doanh cua nhung ((cong tan) OR (cong thanh)) phan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu cac) OR (hieu luc)) - canh doanh cua nhung ((cong tan) or (cong thanh)) phan dau".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu cac) OR (hieu luc)) - canh doanh cua nhung ((cong tan) or (cong thanh)) phan dau*.