Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
sach tien » sach tren, sach thieu
thuc cach » thuoc sach, truoc cach, thuc hanh
phan cung » phan cong, phan ung, phan xuong
tien hoc » tin hoc, tien hoa, dien hoc
cach hai » cach thoi, cach hoan, cach phat
hai phan » thai phan, tai phan, hai pham
cung may » dung may, cong may, cung hay
tu sach » thu sach, su sach, te sach
tinh » trinh, 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 tien hoc chuyen đe ky thuat: kien thuc cach hai phan cung may ((tinh or kinh) or dinh)~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tien hoc chuyen đe ky thuat: kien thuc cach hai phan cung may ((tinh OR kinh) OR dinh).
• Adding a wildcard symbol may retrieve word variants: tu sach tien hoc chuyen đe ky thuat: kien thuc cach hai phan cung may ((tinh or kinh) or dinh)*.