Assuming this is even something we can configure, the 'Zarro Boogs found.' line when not finding any results is just plain unhelpful and should be changed. Not only is it not immediately readable for what it says due to the strange spelling of the words, the placement of colour makes the line very easy to overlook entirely.
Better, for instance, would be to simply say 'No bugs found.' and move it further down so it doesn't get as lost in the general navigation, and changing the styling so it is not using the same style and positioning as the option links would also help.
If it is at all possible, a short explanation of why there might be no results or what one can do from there might also be useful, instead of just three nondescript options that don't necessarily help the lost, but that's probably a little iffier.
Version: wmf-deployment
Severity: enhancement
See Also:
https://bugzilla.mozilla.org/show_bug.cgi?id=313647