Perhaps you should try some spelling variations:
dang xay » dang van, van xay
xay phoi » cay phoi, cap phoi, tay hoi
ban hanh » ban hang
ban banh » ban anh, ban danh, ban thanh
so sach » so sanh, bo sach, co sach
hai cua » thai cua, dai cua, hoi cua
hieu va » lieu va, hieu qua
hieu ve » hieu van
cua tre » cua te, cuu tre, cua triet
y dang » ky dang, 2 dang, _ dang

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach y dang xay phoi. ((hieu ve) OR (hieu va)) pham duc ((ban banh) OR (ban hanh)) hai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y dang xay phoi. ((hieu ve) OR (hieu va)) pham duc ((ban banh) OR (ban hanh)) hai cua tre".
• Adding a wildcard symbol may retrieve word variants: so sach y dang xay phoi. ((hieu ve) OR (hieu va)) pham duc ((ban banh) OR (ban hanh)) hai cua tre*.