Perhaps you should try some spelling variations:
phuong trinh » chuong trinh, cong trinh, huong tran
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
chu phuong » cuu phuong, thu phuong, cau phuong
trinh toan » tinh toan, thanh toan, trinh han
trang cua » tranh cua, tang cua, thang cua
trung cua » truong cua, trung tuan, trung cap
toan cao » toan ban, toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu xanh) OR (chieu sach)) - hanh ((trang cua) OR (trung cua)) chu phuong trinh toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu xanh) or (chieu sach)) - hanh ((trang cua) OR (trung cua)) chu phuong trinh toan cao~".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) or (chieu sach)) - hanh ((trang cua) OR (trung cua)) chu phuong trinh toan cao*.