When using any of the searchers available in the Search API , four results are returned by default. Historically, it has been possible to request a large set of eight results (or ten for filter Custom Search Engines), but that's it. We understand that there are many use cases for this API, and some of them require a finer grain of control over the number of results displayed. For instance, with the JavaScript API, you can use .setResultSetSize(1) or ....