I came across a situation today where a Business Manager could not search for all her forms with a specific word in the instance name, and yet I could. I could not find a reason why, other than I have Administrator rights which in this case I don't think it should be limited to just administrators.
Below is a clipshot of my search and when we duplicated this in her window, she got nothing. Why would she not be able to search for a name (or something in the name field) even when it is part of the instance name?