Perhaps you should try some spelling variations:
phuong trinh » chuong trinh, cong trinh, huong tran
dung phuong » dung thuong, bang phuong, dung chung
hieu quang » thieu quang, hieu quan, hieu qua
canh doanh » hanh doanh, chinh doanh, doanh doanh
trinh toan » tinh toan, thanh toan, trinh han
hieu sang » chieu sang, hieu lang, nhieu tang
doanh cua » doanh luan
cua dung » cua dang, cua dong, qua dung
toan tap » toan ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu sang) or (hieu quang)) - canh doanh cua dung phuong trinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu sang) OR (hieu quang)) - canh doanh cua dung phuong trinh toan tap.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu sang) or (hieu quang)) - canh doanh cua dung phuong trinh toan tap*.