Perhaps you should try some spelling variations:
phuong trinh » chuong trinh, cong trinh, huong tran
thanh thong » thanh thuong, thanh hong, thanh thang
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
trinh toan » tinh toan, thanh toan, trinh han
cua thong » cua thuong, cua khong, cua tong
cua dong » chua dong, cua cong, cua dang
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - thanh thong ((cua thong) or (cua dong)) phuong trinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh thong ((cua thong) OR (cua dong)) phuong trinh toan cau.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh thong ((cua thong) or (cua dong)) phuong trinh toan cau*.