Perhaps you should try some spelling variations:
phuong trinh » chuong trinh, cong trinh, huong tran
thanh trung » thanh tung
manh trung » manh tung, manh hung, sinh trung
chu phuong » cuu phuong, thu phuong, cau phuong
trinh toan » tinh toan, thanh toan, trinh han
chi sang » chi lang, chieu sang, chi chang
toan tap » toan ban
doi chi » doi khi
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 - ((thanh 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 - ((thanh trung) OR (manh trung)) cua chu phuong trinh toan tap.
• Adding a wildcard symbol may retrieve word variants: doi chi sang - ((thanh trung) or (manh trung)) cua chu phuong trinh toan tap*.