How to get Google search query in real time?

Is it possible to know in real time what request a visitor visited before landing on your site?

Google switched the url structure before request ( q=

) with #

instead of ?

or &

to avoid sending data to the url. Now document.referrer

there are https://www.google.com

no parameters for parsing.

Before: How does a website know the Google query that I used to find it?

My goal is to allow the website to search its own database for relevant content or tools not indexed by Google.

Google Analytics has real-time data. the limited beta API can enable session join via primary key (user_id or IP) to get its refering keyword.