Perhaps you should try some spelling variations:
cam thuc » am thuc, nam thuc, cam thu
danh dai » danh dau, danh di, danh sai
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
cua tre » cua te, cuu tre, cua triet
te sac » te sach, te san
te cac » tu cac, ve cac, te cao
va cam » va cham, va cac, va cao
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 sac) or (te cac)) ky nang x hoi. hieu va cam thuc va danh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sac) OR (te cac)) ky nang x hoi. hieu va cam thuc va danh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((te sac) or (te cac)) ky nang x hoi. hieu va cam thuc va danh dai cua tre*.