I was a bit surprised when I entered David Attell and got no results. Thinking I had misspelled the last name, I entered a few permutations of Atel, Attel, etc, again with no results.
Later on down the search query, I dropped the first name, and got results. The artist is apparently known as Dave Attell, not David.
As I write, I am not sure a search could or should overcome these first name variances. But I serve it up as a data point for your consideation.