Rich results are experiences on Google surfaces, such as Search, that go beyond the standard blue link. Rich results can include carousels, images, or other non-textual elements.

https://search.google.com/test/rich-results

Structured Data Gallery

Google uses structured data to understand the content on the page.

https://developers.google.com/search/docs/advanced/structured-data/search-gallery

How to implement sitelinks search box

A sitelinks search box is a quick way for people to search your site or app immediately on the search results page.

https://developers.google.com/search/docs/advanced/structured-data/sitelinks-searchbox

Schema test checker

https://validator.schema.org/