Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh thanh, dong doanh
chieu sang » chieu sach, chieu xanh, hieu lang
doanh hoan » doanh khoa, doanh nhan, doanh luan
doi chieu » doc hieu, doi chi, ho chieu
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 - ((canh manh) or (cach mang)) cua nhung ((doanh doanh) OR (doanh hoan)) phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - ((canh manh) OR (cach mang)) cua nhung ((doanh doanh) OR (doanh hoan)) phan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - ((canh manh) or (cach mang)) cua nhung ((doanh doanh) OR (doanh hoan)) phan tu".
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - ((canh manh) or (cach mang)) cua nhung ((doanh doanh) OR (doanh hoan)) phan tu*.