Yes, using a script you can do that.
Step 1. Limit the search to only folders
Set the file name expression type to be Folders Only.
Step 2. Pick the
Go to the Scripting Tab and activate the File name script. Pick the
empty_folders.js script which is installed into the Sample Scripts folder, usually here:
C:\Program Files\Mythicsoft\FileLocator Pro\Sample Scripts\empty_folders.js
Click the Test button to make sure it works.
Step 3. Run the search
Now when you run the search you should find that only empty folders are found.