Perhaps you should try some spelling variations:
phuong trinh » chuong trinh, cong trinh, huong tran
chieu xanh » chieu sach, chieu sang, chieu tinh
nhu phuong » thu phuong, nhung phuong, thi 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 cau » 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: theo ((chieu xanh) OR (chinh sach)) - hanh ((trang cua) OR (trung cua)) nhu phuong trinh toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) or (chinh sach)) - hanh ((trang cua) OR (trung cua)) nhu phuong trinh toan cau~".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (chinh sach)) - hanh ((trang cua) OR (trung cua)) nhu phuong trinh toan cau*.