I'm not sure what you mean by an "orphaned" changed controlled item, but there's a couple different ways to search for them. If you're trying to add this item to an ECO anyway, the easiest way to do this would be to simply add a new affected item to the ECO's Impact Matrix. This launches a search dialog that lets you search on all of the Change Controlled Items in your system.
Alternatively, you can add a TOC Access relationship to the Change Controlled Item ItemType to let you search for these items in the main grid. To do this...
Now you should be able to select this item from the TOC to perform a search in the main grid.