Hi Kenny,
Thank you for the details. I tried to log-in with the admin credentials to see the configuration, but they seem to be incorrect, can you check that?
When searching “two story” it is possible, that the keyword “two” is present somewhere in the selected search fields, therefore it is considered a match. If you want to have more stric results like that, you can either try simply switching on the exact matching.
If you don’t want that, you need to locate where that information is stored, and restrict the search fields to that. So if it is a category – then make sure that is enabled, and all of the unncessary fields are disabled (like title and content search).
Usually the best course of action is using the exact matching in these cases.
The reason you can’t create a filter based on the post titles is, that it is not possible, there is no such feature in the plugin. You can do taxonomy, custom field, date, user meta, post meta filters, but post title/content fields are not possible. We may implement a post title based filter in the future though. It depends, usually these types of post field filters are very problematic in terms of search performance.