Perhaps you should try some spelling variations:
phuong trinh » chuong trinh, cong trinh, huong tran
dang phuong » bang phuong, dung phuong, dan phuong
chieu sang » chieu sach, chieu xanh, hieu lang
hieu quang » thieu quang, hieu quan, hieu qua
trinh toan » tinh toan, thanh toan, trinh han
tranh cua » doanh cua, manh cua
cua dang » cua cong, cua ban
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 ((chieu sang) or (hieu quang)) - canh tranh cua dang phuong trinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chieu sang) OR (hieu quang)) - canh tranh cua dang phuong trinh toan tap.
• Adding a wildcard symbol may retrieve word variants: doc ((chieu sang) or (hieu quang)) - canh tranh cua dang phuong trinh toan tap*.