Perhaps you should try some spelling variations:
ban trinh » ban tinh, dan trinh, van trinh
trinh vi » trinh va, trinh ve, trinh viet
thu sach » thuat sach, thuoc sach, thu hoach
pham cuc » pham chuc, pham duc, pham cua
tu sach » su sach, te sach, tu cach
cuc ban » cua ban, cac ban, cuu ban
ve pham » vi pham, v pham, ve phan
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
dong ha » dong hoa, dong va, dong hoc
dang xa » dang xay, lang xa, dang ha
vi cua » vai cua, di cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ty ((dang xa) OR (dong ha)) hoi. hieu ve pham cuc ban trinh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ty ((dang xa) or (dong ha)) hoi. hieu ve pham cuc ban trinh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) ty ((dang xa) or (dong ha)) hoi. hieu ve pham cuc ban trinh vi cua tre*.