Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
danh dai » danh dau, danh di, danh sai
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc day
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

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 ho. hieu va cam ((thuc va) or (thuc dan)) 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 ho. hieu va cam ((thuc va) OR (thuc dan)) danh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((te sac) or (te cac)) ky nang x ho. hieu va cam ((thuc va) or (thuc dan)) danh dai cua tre*.