My name does not come up on search unless you type in my full name

I am credited as "David Alexander Topf", but most people search for me as "David Topf".  My page does not come up in those searches.  I would understand if it was a common last name, but it should be obvious that anybody searching for David Topf is looking for David Alexander Topf.   I was even credited as "David Topf" in my most recent film, but IMDB just put it into the David Alexander Topf page without doing an "also credited as" or anything.