Exclude folder from gnome search
Solution 1:
First, install the dconf editor GUI apt-get install dconf-editor. You may also use the command line tool with gsettings set
The key you want to edit is /org/freedesktop/tracker/miner/files/ignored-directories
Use a custom value here, make sure you don't remove the existing values. It might look like this:
['po', 'CVS', 'core-dumps', 'lost+found', '/home/user/Dropbox/Documents']
Another quick and easy method to ignore a folder is to place a .trackerignore file in the folder with touch .trackerignore. That won't work in your case.