Similar threads for reference:
It’s good that you made this one a feature request instead though!
I agree that the filter is not doing a fine job for legitimate messages/queries/strings right now, I think everyone can agree on that.
But assuming for a second that the filter would be doing a great job, then if something is filtered, it should not be appearing in any item title/description anyway. If they still appear, then it is because the title/description was not updated recently. So it is functionally correct that your search for that query does not yield any results, and the query should be shown to you as filtered because you can link another user to a search results page.
The problem should be addressed at the source (i.e. the filter being way too restrictive for developer/legitimate use) rather than addressing just one effect of it (the fact that you cannot use the search boxes to search using legitimate queries).