Perhaps you should try some spelling variations:
nhung dong » nhung don, nhung cong, nhung dung
dong doanh » dung doanh, trong doanh, doanh doanh
doanh phan » doanh nhan, doan phan, doanh thanh
hieu sang » chieu sang, hieu lang, hieu quang
cua nhung » va nhung
doc hieu » toc thieu, hoc thieu, hoc hien
van manh » van minh, van anh, van hanh

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 sang - ((van manh) or (cach mang)) cua nhung dong doanh phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sang - ((van manh) OR (cach mang)) cua nhung dong doanh phan tu.
• Adding a wildcard symbol may retrieve word variants: doc hieu sang - ((van manh) or (cach mang)) cua nhung dong doanh phan tu*.