Perhaps you should try some spelling variations:
sach thue » sach thu, sach thieu, sach tham
thuc van » thuc vat, thuc dan, thuc va
dau thuc » dan thuc, dai thuc, dam thuc
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
anh vi » hanh vi, anh ve, anh vu
anh va » hanh va
va dau » va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach ty) or (sach thue)) xang xa hoi. lieu va dau thuc van ((anh vi) or (anh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach thue)) xang xa hoi. lieu va dau thuc van ((anh vi) OR (anh va)) cua tre.
• Adding a wildcard symbol may retrieve word variants: su ((sach ty) or (sach thue)) xang xa hoi. lieu va dau thuc van ((anh vi) or (anh va)) cua tre*.