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 hoa » sach ha, bach hoa, cach hoan
sach hoi » sach doi, sach moi, cach thoi
dang xay » dang van, van xay
xay tinh » may tinh, xa tinh, tay tinh
su sach » so sach, vu sach
tin hoc » sinh hoc

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 hoa) or (sach hoi)) phan dang xay 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 hoa) OR (sach hoi)) phan dang xay tinh.
• Adding a wildcard symbol may retrieve word variants: su sach tin hoc chuyen đe ky thuat: kien thuoc ((sach hoa) or (sach hoi)) phan dang xay tinh*.