Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
sach tren » sach tien, sach tranh
khoa than » khoa luan, hoa thai, hoa tan
than cong » thanh cong, thuan cong, phan cong
may trinh » may tinh, lap trinh, quy trinh
sach tin » sach tien, sach kinh, sach han
thuc anh » thuc hanh, thuy anh, thu anh
anh khoa » doanh khoa, hang khoa
cong may » cong xay, cong ma, cong hay

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) or (sach tren)) hoc chuyen đe ky thuat: kien thuc anh khoa than cong may trinh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach tin) OR (sach tren)) hoc chuyen đe ky thuat: kien thuc anh khoa than cong may trinh.
• Adding a wildcard symbol may retrieve word variants: tu ((sach tin) or (sach tren)) hoc chuyen đe ky thuat: kien thuc anh khoa than cong may trinh*.