Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
phan dang » phan dau, phan cong, nhan dan
sach tin » sach tien, sach tren, sach han
hanh hoa » thanh hoa, khanh hoa, hang hoa
hoa phan » hoa dan, co phan
dang may » mang may, dang xay, dung may
thuc » thu
tinh » trinh, dinh, minh

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 tin) or (sach kinh)) hoc chuyen đe ky thuat: kien thuc hanh hoa phan dang may tinh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach tin) OR (sach kinh)) hoc chuyen đe ky thuat: kien thuc hanh hoa phan dang may tinh.
• Adding a wildcard symbol may retrieve word variants: te ((sach tin) or (sach kinh)) hoc chuyen đe ky thuat: kien thuc hanh hoa phan dang may tinh*.