Perhaps you should try some spelling variations:
thuc day » thuc dan, thuc vat
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan
dinh va » dinh van, dinh ve, tinh va
cua tre » cua te, cuu tre, cua triet
va cua » va chua, via cua, ca cua
va am » va lam, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky lang xa hoi. hieu va am ((thuc va) or (thuc day)) dinh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang xa hoi. hieu va am ((thuc va) OR (thuc day)) dinh va cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky lang xa hoi. hieu va am ((thuc va) or (thuc day)) dinh va cua tre*.