Perhaps you should try some spelling variations:
phuong trinh » chuong trinh, cong trinh, huong tran
hanh trung » thanh trung, hanh trang, danh trung
chieu sang » chieu sach, chieu xanh, hieu lang
manh trung » manh tung, thanh trung, manh hung
chu phuong » cuu phuong, thu phuong, cau phuong
trinh toan » tinh toan, thanh toan, trinh han
chi sang » chi lang, chi chang, khai sang
toan tap » toan ban
cua chu » sua chua

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chi sang) OR (chieu sang)) - ((hanh trung) or (manh trung)) cua chu phuong trinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chi sang) OR (chieu sang)) - ((hanh trung) OR (manh trung)) cua chu phuong trinh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chi sang) OR (chieu sang)) - ((hanh trung) or (manh trung)) cua chu phuong trinh toan tap".
• Adding a wildcard symbol may retrieve word variants: doi ((chi sang) OR (chieu sang)) - ((hanh trung) or (manh trung)) cua chu phuong trinh toan tap*.