Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
te dan » te danh, tre dan, ke dan
dan ky » van ky
cam tu » cam thu, nam tu, dam tu
thuc » thu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te dan ky nang x ho. hieu ve ((am thuc) or (cam tu)) va hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te dan ky nang x ho. hieu ve ((am thuc) OR (cam tu)) va hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: te dan ky nang x ho. hieu ve ((am thuc) or (cam tu)) va hanh vai cua tre*.