Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
phuong tinh » phuong trinh, phuong binh, khuong tinh
chieu sang » chieu sach, chieu xanh, hieu lang
hieu quang » thieu quang, hieu qua, diep quang
canh doanh » hanh doanh, chinh doanh, doanh doanh
hieu quan » hieu qua, lieu quan, thien quan
doanh cua » doanh luan
cua nhung » va nhung
toan cau » toan cao, toan ban, toan tap

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 quang) OR (hieu quan)))) - canh doanh cua nhung phuong tinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (((hieu quang) OR (hieu quan)))) - canh doanh cua nhung phuong tinh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sang) or (((hieu quang) OR (hieu quan)))) - canh doanh cua nhung phuong tinh toan cau".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) or (((hieu quang) OR (hieu quan)))) - canh doanh cua nhung phuong tinh toan cau*.