Perhaps you should try some spelling variations:
cac thuc » cach thuc, cac thu, can thuc
thuc day » thuc dan, thuc vat
dang de » dang deo, dung de, vang de
dang do » nang doc, dang duc, dung doi
cua tre » cua te, cuu tre, cua triet
vu sai » vu hai, vu san, vu dai
sai ky » sac ky
x hoi » xa hoi, o hoi, x ho

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sai ky nang x hoi. lieu va cac thuc day ((dang de) OR (dang do)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: vu sai ky nang x hoi. lieu va cac thuc day ((dang de) OR (dang do)) cua tre*.