At https://github.com/ezsystems/ezpublish-kernel/blob/master/eZ/Publish/Core/Search/Legacy/Content/Common/Gateway/CriterionHandler/FullText.php#L194

We see that the query do a "or" between words in a search query.
That's not the typical behavior of a search engine.
Is it possible to override this CriterionHandler in a bundle ?

It would be great if the and/or behaviour could be configurable.