Perhaps you should try some spelling variations:
phuong trinh » chuong trinh, cong trinh, huong tran
thieu sach » chieu sach, thien hach, hieu cach
manh trung » manh tung, thanh trung, manh hung
trinh toan » tinh toan, thanh toan, trinh han
hoc thieu » toc thieu, hoc hien
cua dang » cua cong
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: hoc thieu sach - manh trung ((cua dang) or (cua ban)) phuong trinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - manh trung ((cua dang) OR (cua ban)) phuong trinh toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - manh trung ((cua dang) or (cua ban)) phuong trinh toan cao*.