Perhaps you should try some spelling variations:
hai thuc » thai thuc, dai thuc, ha thuc
cua tre » cua te, cuu tre, cua triet
hieu va » hieu qua
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
thuc va » thuc vat, thuc dan, thuc day
di cua » dai cua, doi cua, de cua
anh di » danh di, xanh di, anh d
va anh » van anh, va danh, va hanh
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky ((nang xa) or (nang ma)) hoi. ((lieu va) or (hieu va)) hai thuc va anh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky ((nang xa) OR (nang ma)) hoi. ((lieu va) OR (hieu va)) hai thuc va anh di cua tre.
• Adding a wildcard symbol may retrieve word variants: su sac ky ((nang xa) or (nang ma)) hoi. ((lieu va) or (hieu va)) hai thuc va anh di cua tre*.