Perhaps you should try some spelling variations:
phuong trinh » chuong trinh, cong trinh, huong tran
chiet tach » chieu sach
chieu sang » chieu sach, chieu xanh, hieu lang
manh trung » manh tung, thanh trung, manh hung
trinh toan » tinh toan, thanh toan, trinh han
cua dung » cua dang, cua dong, cua rung
qua dung » quang dung, su dung, qua song
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 ((chiet tach) or (chieu sang)) - manh trung ((cua dung) OR (qua dung)) phuong trinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chiet tach) OR (chieu sang)) - manh trung ((cua dung) OR (qua dung)) phuong trinh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chiet tach) or (chieu sang)) - manh trung ((cua dung) OR (qua dung)) phuong trinh toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((chiet tach) or (chieu sang)) - manh trung ((cua dung) OR (qua dung)) phuong trinh toan cao*.