Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
thuc bach » truc bach, thuc cach, thuoc sach
bach khoa » anh khoa
khoa chan » khoa than, khoa can, khoa cham
sach tin » sach tien, sach kinh, sach tren
dung may » dung tai, mang may, dung mo
vu sach » vu bach, su sach, vu khach
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: vu sach tin hoc chuyen đe ky thuat: kien thuc bach khoa chan ((dung may) OR (dung va)) tinh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach tin hoc chuyen đe ky thuat: kien thuc bach khoa chan ((dung may) OR (dung va)) tinh".
• Adding a wildcard symbol may retrieve word variants: vu sach tin hoc chuyen đe ky thuat: kien thuc bach khoa chan ((dung may) OR (dung va)) tinh*.