Search function for content of Accordions?

Currently, Elementor does not have a feature.

If you like, you can submit a Feature Request on Github, which is where we take feature requests.
You can submit them at https://github.com/elementor/elementor/issues/new/choose
which gives you the opportunity to follow the discussion about ideas you submit, and track development progress of any that get implemented.

You can learn more about how to submit requests at https://github.com/elementor/elementor/blob/master/.github/CONTRIBUTING.md