Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
va thanh » gia thanh, va tinh, le thanh
te sach » toc sach
cac duc » cac du, cao duc, cac dac
dat cua » dai cua, day cua, mat cua
hieu ve » hieu va, hieu van
song xa » song cua
sang ma » tang ma, nang ma, sang tao
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac

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: te sach y ((song xa) OR (sang ma)) hoi. hieu ve cac duc ((va thanh) OR (ban thanh)) dat cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((song xa) or (sang ma)) hoi. hieu ve cac duc ((va thanh) OR (ban thanh)) dat cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sach y ((song xa) or (sang ma)) hoi. hieu ve cac duc ((va thanh) OR (ban thanh)) dat cua tre*.