Perhaps you should try some spelling variations:
phuong toan » phuong tran, phuong doan, phuong loan
chieu sang » chieu sach, chieu xanh, hieu lang
canh doanh » hanh doanh, chinh doanh, doanh doanh
phong toan » phong thanh, phong trao, phong van
doi chieu » doc hieu, doi chi, ho chieu
doanh va » doan va, doanh tai, doanh cua
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 nhung ((phuong toan) OR (phong 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 nhung ((phuong toan) OR (phong 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 nhung ((phuong toan) OR (phong toan)) ((phan cau) or (phan dau))".
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - canh doanh va nhung ((phuong toan) OR (phong toan)) ((phan cau) or (phan dau))*.