Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
thuc dan » thuc hanh, hoc dan, thuc vat
dao thuc » dan thuc, dao tuc, do thuc
sach ty » sach y, sach tu, sach thu
dan anh » dan canh, dan hanh, van anh
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va
xang xa » lang xa, mang xa, dang xay
ang xa » lang xa, mang xa, dang xay
anh va » hanh va
va cua » va chua, via cua, ca cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty ((xang xa) OR (ang xa)) hoi. ((hieu va) or (hieu qua)) dao thuc dan anh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty ((xang xa) OR (ang xa)) hoi. ((hieu va) OR (hieu qua)) dao thuc dan anh va cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty ((xang xa) OR (ang xa)) hoi. ((hieu va) or (hieu qua)) dao thuc dan anh va cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sach ty ((xang xa) OR (ang xa)) hoi. ((hieu va) or (hieu qua)) dao thuc dan anh va cua tre*.