Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
thuong may » thuong mai, thong may, thuong day
thuc cach » thuoc sach, truoc cach, thuc hanh
cach khoa » bach khoa, cac khoa, cac khoan
khoa phau » hoa phan, khoa kham, khoa than
thuong ma » thuong mai, thuong va, thuong gap
sach tin » sach tien, sach kinh, sach tren
so sach » so sanh, bo sach, co 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: so sach tin hoc chuyen đe ky thuat: kien thuc cach khoa phau ((thuong may) OR (thuong ma)) tinh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach tin hoc chuyen đe ky thuat: kien thuc cach khoa phau ((thuong may) OR (thuong ma)) tinh".
• Adding a wildcard symbol may retrieve word variants: so sach tin hoc chuyen đe ky thuat: kien thuc cach khoa phau ((thuong may) OR (thuong ma)) tinh*.