Perhaps you should try some spelling variations:
doanh luan » doanh nhan
nhung cong » dung cong, thong cong, hang cong
cong doan » cong dan, cong hoan, dong doanh
doan phan » doanh phan, toan phan, dan phan
hoi hieu » hoi phieu, hoi tieu, moi hieu
phan dau » phan tu, hang dau
ho hieu » ho chieu, nho hieu, co hieu

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

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