Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
va thanh » gia thanh, va tinh, le thanh
co sach » bo sach, cuon sach, hoc sach
sach ty » sach y, sach tu, sach thu
hanh xa » hanh va, hanh xu, canh xa
hanh ma » hanh mau, hanh may, hanh va
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
san cua » sang cua, ban cua, dan cua
cua tre » cua te, cuu tre, cua triet

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: co sach ty ((hanh xa) OR (hanh ma)) hoi. hieu ve pham duc ((va thanh) OR (ban thanh)) san cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "co sach ty ((hanh xa) or (hanh ma)) hoi. hieu ve pham duc ((va thanh) OR (ban thanh)) san cua tre~".
• Adding a wildcard symbol may retrieve word variants: co sach ty ((hanh xa) or (hanh ma)) hoi. hieu ve pham duc ((va thanh) OR (ban thanh)) san cua tre*.