I'm not aware of any way to modify the behavior of the built-in search function. There may be an undocumented ini setting that the NI folks might be willing to tell us about.
If this a big problem that will be happening often for you, you might consider building your own search tool. Using a combination of Property and Invoke nodes, you can do some pretty complex functions and make some really nice tools that work just the way you need. Somebody may already have one their willing to share.
Ed

Ed Dickens - Certified LabVIEW Architect
Lockheed Martin Space
Using the Abort button to stop your VI is like using a tree to stop your car. It works, but there may be consequences.