Good question. I don't think the report names are indexed as part of the built in search function in the GUI but don't have access to my lab systems right now to test.
The only other way would be through the CLI and grep / find the key word out of the dfm report list output although this requires you potential keyword to be in the name or description of the report. For example Exports may just be used and no mention of NFS.
Otherwise see if one of the OM engineering folks responds to this thread with any ideas.