Perhaps you should try some spelling variations:
phuong trinh » chuong trinh, cong trinh, huong tran
chieu xanh » chieu sach, chieu sang, chieu tinh
trinh toan » tinh toan, thanh toan, trinh han
hanh tang » hanh trang, hanh mang, hanh tung
cua thong » cua thuong, cua khong, suat thong
ho chieu » theo chieu, hoc thieu, doi chieu
anh tang » anh bang, anh dang, anh nang
cua tong » cua cong, cua dong, cua nong
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: ho chieu xanh - ((hanh tang) or (anh tang)) ((cua thong) OR (cua tong)) phuong trinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - ((hanh tang) OR (anh tang)) ((cua thong) OR (cua tong)) phuong trinh toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - ((hanh tang) or (anh tang)) ((cua thong) OR (cua tong)) phuong trinh toan cau*".