Perhaps you should try some spelling variations:
kien thuoc » kien thuc, bien thuoc, trien thuoc
thuoc bach » thuoc sach, thuoc ban, truc bach
phan dang » phan dau, phan cong, nhan dan
xay trinh » xuan trinh, may tinh, lap trinh
tien hoc » tin hoc, dien hoc, tien hon
tien hoa » dien hoa, trien hoat, tien va
bach hoa » bach khoa, bach ha, cach hoan
hoa phan » hoa dan, co phan
dang xay » dang van, van xay
su sach » so sach, vu sach

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 ((tien hoc) OR (tien hoa)) chuyen đe ky thuat: kien thuoc bach hoa phan dang xay trinh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((tien hoc) OR (tien hoa)) chuyen đe ky thuat: kien thuoc bach hoa phan dang xay trinh".
• Adding a wildcard symbol may retrieve word variants: su sach ((tien hoc) OR (tien hoa)) chuyen đe ky thuat: kien thuoc bach hoa phan dang xay trinh*.