Perhaps you should try some spelling variations:
phuong trinh » chuong trinh, cong trinh, huong tran
cong phuong » cong thuong, cong huong, dong phuong
theo chieu » theo tieu, theo chu, thi chieu
cang thang » cong thanh, dang thanh
trinh toan » tinh toan, thanh toan, trinh han
hanh hang » thanh hang, hang hang, hanh han
ho chieu » hoc thieu, doi chieu, mot chieu
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) OR (ho chieu)) sang - ((hanh hang) or (cang thang)) cua cong phuong trinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) sang - ((hanh hang) OR (cang thang)) cua cong phuong trinh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) OR (ho chieu)) sang - ((hanh hang) or (cang thang)) cua cong phuong trinh toan cau".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) OR (ho chieu)) sang - ((hanh hang) or (cang thang)) cua cong phuong trinh toan cau*.