Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
phuong toan » phong toan, phuong tran, phuong doan
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, ho chieu
doanh cua » doanh luan
doanh va » doan va, doanh tai, hanh va
phan cau » phan cac, phan tu, phan lap
phan dau » phan tu, hang dau

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