WordPress at a glance
function is not described

_admin_search_query() WP 2.7.0

Displays the search query.

A simple wrapper to display the "s" parameter in a GET URI. This function should only be used when the_search_query() cannot.

No Hooks.

Return

Nothing (null).

Usage

_admin_search_query();

Code of admin search query: wp-admin/includes/template.php VER 5.0.3

<?php
function _admin_search_query() {
	echo isset($_REQUEST['s']) ? esc_attr( wp_unslash( $_REQUEST['s'] ) ) : '';
}