Perhaps you should try some spelling variations:
lam thuc » lam thuoc, am thuc, nam thuc
hanh dau » hang dau, danh dau, han dau
hieu va » hieu qua
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
dau cua » dai cua, day cua, cau cua
cua tre » cua te, cuu tre, cua triet
te cac » tu cac, te cao, de cac
ve cac » va cac, vien cac
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te cac) or (ve cac)) ky nang x hoi. ((hieu va) or (lieu va)) lam thuc va hanh dau cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te cac) OR (ve cac)) ky nang x hoi. ((hieu va) OR (lieu va)) lam thuc va hanh dau cua tre.
• Adding a wildcard symbol may retrieve word variants: ((te cac) or (ve cac)) ky nang x hoi. ((hieu va) or (lieu va)) lam thuc va hanh dau cua tre*.