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