see
here, in this case the settings below those which I marked in red.
And the "All" button should work fine unless you want to use it in a zone with non-ASCII characters in its name (i.e. on localized servers). Unfortunately SOE does not support international character sets for interface scripting, please /feedback that you would like to see that.
However, if you have limited the search to the current zone in the options you can just make an empty search to achieve the same result.