Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
kien thuoc » kien thuc, bien thuoc, trien thuoc
thuoc sach » hoc sach, nuoc sach, thuat sach
sach sinh » sach kinh, sach danh, sach song
khoa van » hoa van, khoa luan, khoa than
khoa can » khoa cam, khoa cap, khoi can
dong tai » dung tai, luong tai, cong tac
tai sinh » tai dinh, tai chinh, phai sinh
te sach » toc sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach sinh hoc chuyen đe ky thuat: kien thuoc sach ((khoa van) OR (khoa can)) dong tai sinh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach sinh hoc chuyen đe ky thuat: kien thuoc sach ((khoa van) OR (khoa can)) dong tai sinh".
• Adding a wildcard symbol may retrieve word variants: te sach sinh hoc chuyen đe ky thuat: kien thuoc sach ((khoa van) OR (khoa can)) dong tai sinh*.