Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
sach tren » sach tien, sach tranh
ban thuoc » dang thuoc, cay thuoc, nam thuoc
may trinh » may tinh, lap trinh, quy trinh
tren hoc » truyen hoc, trung hoc, triet hoc
dai phan » dai han, dam phan, tai phan
so sach » so sanh, bo sach, co sach
bac dai » bach mai
tu may » tu ma, ty may, tu cay
thuc » thu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sach tren hoc chuyen đe ky thuat: ((kien thuc) or (ban thuoc)) bac dai phan tu may trinh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach tren hoc chuyen đe ky thuat: ((kien thuc) OR (ban thuoc)) bac dai phan tu may trinh.
• Adding a wildcard symbol may retrieve word variants: so sach tren hoc chuyen đe ky thuat: ((kien thuc) or (ban thuoc)) bac dai phan tu may trinh*.