Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
sach tren » sach tien, sach tranh
phan dang » phan dau, phan cong, nhan dan
tren hoc » truyen hoc, trung hoc, triet hoc
sach hoa » sach ha, bach hoa, cach hoan
sach hoi » sach doi, sach moi, cach thoi
dang may » mang may, dang xay, dung may
su sach » so sach, vu sach
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 tren hoc chuyen đe ky thuat: kien thuc ((sach hoa) or (sach hoi)) phan dang may tinh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach tren hoc chuyen đe ky thuat: kien thuc ((sach hoa) OR (sach hoi)) phan dang may tinh.
• Adding a wildcard symbol may retrieve word variants: su sach tren hoc chuyen đe ky thuat: kien thuc ((sach hoa) or (sach hoi)) phan dang may tinh*.