Perhaps you should try some spelling variations:
hoc chuyen » khong chuyen
hoan thanh » hoang thanh, ban thanh, van thanh
sach tren » sach tien, sach tranh
thuc bach » truc bach, thuc cach, thuoc sach
hoa thanh » ha thanh, hoc thanh, hoang thanh
duong van » duong va, luong va, dang van
tren hoc » truyen hoc, trung hoc, triet hoc
tu sach » thu sach, su sach, te sach
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: tu sach tren hoc chuyen đe ky thuat: kien thuc bach ((hoa thanh) OR (hoan thanh)) duong van minh~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tren hoc chuyen đe ky thuat: kien thuc bach ((hoa thanh) OR (hoan thanh)) duong van minh".
• Adding a wildcard symbol may retrieve word variants: tu sach tren hoc chuyen đe ky thuat: kien thuc bach ((hoa thanh) OR (hoan thanh)) duong van minh*.