Perhaps you should try some spelling variations:
khoa chuyen » hoa chuyen, khoa huyen, khoe chuyen
dien nguoi » gian nguoi
nguoi sach » nguoi san, nuoc sach
sach dien » mach dien, sach tien, dich dien
dien khoa » dien hoa, vien khoa, hien khoa
than ung » than uong, han ung, toan ung
phan ung » phan xuong, phan cong
tu sach » thu sach, su sach, te sach
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: tu sach dien khoa chuyen đe ky thuat: dien nguoi sach nha ((than ung) or (phan ung)) may tinh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach dien khoa chuyen đe ky thuat: dien nguoi sach nha ((than ung) OR (phan ung)) may tinh.
• Adding a wildcard symbol may retrieve word variants: tu sach dien khoa chuyen đe ky thuat: dien nguoi sach nha ((than ung) or (phan ung)) may tinh*.