Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
khoa phan » hoa phan, khoa than, khoa phau
sach tin » sach tien, sach kinh, sach tren
thuc cac » thuc cach, tuc cac, phuc cac
cac khoa » cac khoan, cac khoi, dac khoa
cong may » cong ma, cong hay, cong my
cong xay » thong xay, trong xay, cong ty
tu sach » thu sach, su sach, te 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: tu sach tin hoc chuyen đe ky thuat: kien thuc cac khoa phan ((cong may) OR (cong xay)) trinh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tin hoc chuyen đe ky thuat: kien thuc cac khoa phan ((cong may) OR (cong xay)) trinh".
• Adding a wildcard symbol may retrieve word variants: tu sach tin hoc chuyen đe ky thuat: kien thuc cac khoa phan ((cong may) OR (cong xay)) trinh*.