Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
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 lang » hieu quang, nhieu tang, hieu van
canh manh » lanh manh, canh tranh, van manh
cua nhung » va nhung

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 lang)) - ((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 lang)) - ((canh manh) OR (cach mang)) cua nhung dong doanh phan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sang) OR (hieu lang)) - ((canh manh) or (cach mang)) cua nhung dong doanh phan tu".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) OR (hieu lang)) - ((canh manh) or (cach mang)) cua nhung dong doanh phan tu*.