Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
sach tien » sach tren, sach thieu
thuc cach » thuoc sach, truoc cach, thuc hanh
khoa phan » khoa than, khoa phau, khoan phai
tien hoc » tin hoc, tien hoa, dien hoc
hoa phan » hoa dan, co phan
tai tinh » thai tinh, tai dinh, tai sinh
tu sach » thu sach, su sach, te sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach tien hoc chuyen đe ky thuat: kien thuc cach ((khoa phan) OR (hoa phan)) dung tai tinh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tien hoc chuyen đe ky thuat: kien thuc cach ((khoa phan) OR (hoa phan)) dung tai tinh".
• Adding a wildcard symbol may retrieve word variants: tu sach tien hoc chuyen đe ky thuat: kien thuc cach ((khoa phan) OR (hoa phan)) dung tai tinh*.