Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
dai thuc » dan thuc, dai thu, dai thua
thuc van » thuc vat, thuc dan, thuc va
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, cua triet
ty ang » ty xang, ty hang, ty anh
ang xa » lang xa, mang xa, dang xay
va dai » va dao, vi dai, va dau

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 ang xa hoi. hieu va dai thuc van ((anh va) or (hanh va)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty ang xa hoi. hieu va dai thuc van ((anh va) OR (hanh va)) cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach ty ang xa hoi. hieu va dai thuc van ((anh va) or (hanh va)) cua tre*.