Hi,
Thanks, it is working now.
Results count issue
It is because of the custom field filters. If I remove the filters and try then, it shows all of them. That means that the remaining 5 items most likely not match any of the filter values.
Category filtering issue
It’s very likely to a misconfiguration on the Frontend search settings -> Advanced panel. Currently it will display any result if any of the filter values match from any box, at least one time. I would rather recommend a more strict configuration, like the default one: http://i.imgur.com/Xg3hLcA.png
I’ve made this change, it should be more responsive to filtering now.
Results not returned
I’m suspecting this is related to the first issue, as there are 5 posts not matching any of the filters at all, so they are not returned. The suggestion script does not take filtering into account (due to performance related issues).