Perhaps you should try some spelling variations:
cac thuc » cach thuc, cac thu, cay thuc
can thuc » dan thuc, van thuc, cay thuc
day dang » da dang, dai dang, day dan
hieu ve » hieu va, hieu van
dang de » dang deo, dung de, dang do
cua tre » cua te, cuu tre, cua triet
vu sai » vu hai, vu san, vu dai
sai ky » sac ky
de cua » le cua, te cua, dieu cua
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: vu sai ky nang x hoi. hieu ve ((cac thuc) OR (can thuc)) day dang de cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sai ky nang x hoi. hieu ve ((cac thuc) OR (can thuc)) day dang de cua tre".
• Adding a wildcard symbol may retrieve word variants: vu sai ky nang x hoi. hieu ve ((cac thuc) OR (can thuc)) day dang de cua tre*.