Perhaps you should try some spelling variations:
thuc day » thuc dan, thuc vat
danh dai » danh dau, danh di, danh sai
hieu va » lieu va, hieu qua
thuc va » thuc vat, thuc dan
cua tre » cua te, cuu tre, cua triet
te sac » te sach, te cac, te san
ve cac » va cac, vien cac
va lam » van lam, va lap
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 (ve cac)) ky nang x hoi. hieu va lam ((thuc va) OR (thuc day)) danh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sac) OR (ve cac)) ky nang x hoi. hieu va lam ((thuc va) OR (thuc day)) danh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sac) or (ve cac)) ky nang x hoi. hieu va lam ((thuc va) OR (thuc day)) danh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te sac) or (ve cac)) ky nang x hoi. hieu va lam ((thuc va) OR (thuc day)) danh dai cua tre*.