Perhaps you should try some spelling variations:
xang xay » dang xay, van xay, cong xay
xang dau » hang dau
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty ((xang xay) OR (xang dau)) hoi. hieu va cam xuc va hanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty ((xang xay) OR (xang dau)) hoi. hieu va cam xuc va hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((xang xay) OR (xang dau)) hoi. hieu va cam xuc va hanh vi cua tre*.