How do I use a regular expression to match any string, but at least 3 characters?

Question

I am not a regex expert, but my request is simple: I need to match any string that has at least 3 or more characters that are matching.

So for instance, we have the

Answer 1

I tried find similiar as topic first post.

For my needs I find this

http://answers.oreilly.com/topic/217-how-to-match-whole-words-with-a-regular-expression/

"\b[a-zA-Z0-9]{3}\b"

3 char words only "iokldöajf asd alkjwnkmd asd kja wwda da aij ednm <.jkakla "