Search shortcode or functions?

Hello, is there a shortcode or php snippet available for adding the search feature elsewhere on the site (i.e. not on the post where comments are added)?

We’re setting up a series of custom posts for Topics, with Discuz comments on each post. My goal is to add a global search form that can search for all comments on all topics in one place, and ideally link to the specific comment directly on their Topic post. Possible? I can try creating a custom WP search template if not, but would love to use a built in feature if it exists.

Thanks!