Perhaps you should try some spelling variations:
cam thuc » am thuc, nam thuc, can thuc
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
hieu ve » hieu va, hieu van
cam thu » nam thu, cac thu, ca thu
cua tre » cua te, cuu tre, cua triet
nang o » nang co, nang ho, nang ro
vi cua » vai cua, di cua
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang o hoi. hieu ve ((cam thuc) or (cam thu)) va thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang o hoi. hieu ve ((cam thuc) OR (cam thu)) va thanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang o hoi. hieu ve ((cam thuc) or (cam thu)) va thanh vi cua tre*.