No, I mean searching a thread for any replies to a user. If I have a guy spamming a thread and I don't catch it in time, there are often replies. What is the easiest way to find the replies? If the username has no spaces, it's easy. If not ...
There is nothing available which will do that as replies are attributed to the member making the post, not the person of the post they are replying to.
You would need to search for quoted content, or do a DB query.