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
thu sach » tu sach, thuat sach, thuoc sach
tren hoc » truyen hoc, trung hoc, triet hoc
cong van » cong vang, cong san, cong tan
song van » hoang van, trong van, duong van
bach ha » bac ha, bich ha, sach ha
ha phan » hoa phan, hai phan, va phan
minh » dinh

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach tren hoc chuyen đe ky thuat: kien thuc bach ha phan ((cong van) OR (song van)) minh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach tren hoc chuyen đe ky thuat: kien thuc bach ha phan ((cong van) OR (song van)) minh".
• Adding a wildcard symbol may retrieve word variants: thu sach tren hoc chuyen đe ky thuat: kien thuc bach ha phan ((cong van) OR (song van)) minh*.