Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
dang xay » dang van, van xay
va thanh » gia thanh, va tinh, le thanh
te sach » toc sach
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
co thuc » do thuc, co thua, mo thuc
sach tu » sach thu, cach tu, sach ty
hieu va » lieu va
xay hoi » xa hoi, tay hoi, cay phoi
tu dang » thu dang, tu dong, su dang

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach tu dang xay hoi. ((hieu va) or (hieu qua)) co thuc ((va thanh) OR (ban thanh)) vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu dang xay hoi. ((hieu va) OR (hieu qua)) co thuc ((va thanh) OR (ban thanh)) vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tu dang xay hoi. ((hieu va) or (hieu qua)) co thuc ((va thanh) OR (ban thanh)) vai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach tu dang xay hoi. ((hieu va) or (hieu qua)) co thuc ((va thanh) OR (ban thanh)) vai cua tre*.