Text to go in the release notes:
This enhancement adds a second, automatic, search with the search terms between quotation marks when a search returns no results.
For example, searches with special characters don't work with Elasticsearch.
A search for Ivy + Bean will return no results. But a search for "Ivy + Bean" will return results.
With this enhancement, if a user searches for Ivy + Bean without quotation marks and gets no results, Koha will automatically search for "Ivy + Bean" and return those results.
This targets both Zebra and Elasticsearch, but is more relevant for Elasticsearch.