Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
nhung dong » nhung don, nhung cong, nhung dung
dong doanh » dung doanh, trong doanh, doanh doanh
doanh phan » doanh nhan, doan phan, doanh thanh
canh manh » lanh manh, canh tranh, van manh
cua nhung » va nhung
hieu van » hieu va, thien van, lieu va

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