Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
sach khien » sach khuyen, sach thieu, cach thien
sach tien » sach tren, sach thieu
phan mang » phan dang, phan cang, phan nang
toan hoa » toan khoa, toan hoat, toan hoc
hoa phan » hoa dan, co phan
tinh » trinh, dinh, minh

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach khien) OR (sach tien)) hoc chuyen đe ky thuat: thien thuat toan hoa phan mang may tinh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach khien) OR (sach tien)) hoc chuyen đe ky thuat: thien thuat toan hoa phan mang may tinh".
• Adding a wildcard symbol may retrieve word variants: su ((sach khien) OR (sach tien)) hoc chuyen đe ky thuat: thien thuat toan hoa phan mang may tinh*.