Source

File: wp-admin/includes/class-wp-plugins-list-table.php

public function _search_callback( $plugin ) {
		global $s;

		foreach ( $plugin as $value ) {
			if ( is_string( $value ) && false !== stripos( strip_tags( $value ), urldecode( $s ) ) ) {
				return true;
			}
		}

		return false;
	}