Perhaps you should try some spelling variations:
thuc van » thuc vat, thuc dan, thuc va
nam thuc » nam thuoc, am thuc, nam thu
tu sach » thu sach, su sach, te sach
hanh di » hanh de, hang di, danh di
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
va nam » van nam, ha nam, va nay

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 ((nang xa) or (lang xa)) hoi. lieu va nam thuc van ((hanh di) or (hanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((nang xa) OR (lang xa)) hoi. lieu va nam thuc van ((hanh di) OR (hanh vi)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((nang xa) or (lang xa)) hoi. lieu va nam thuc van ((hanh di) or (hanh vi)) cua tre*.