Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
sach tren » sach tien, sach tranh
thuc bach » truc bach, thuc cach, thuoc sach
tren hoc » truyen hoc, trung hoc, triet hoc
kco phan » cho phan, so phan, do phan
cung may » dung may, cong may, cung hay
may dinh » may tinh, mai dinh, my dinh
tu sach » thu sach, su sach, te sach

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 tren hoc chuyen đe ky thuat: kien thuc bach ((kco phan) or (co phan)) cung may dinh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tren hoc chuyen đe ky thuat: kien thuc bach ((kco phan) OR (co phan)) cung may dinh.
• Adding a wildcard symbol may retrieve word variants: tu sach tren hoc chuyen đe ky thuat: kien thuc bach ((kco phan) or (co phan)) cung may dinh*.