Source

File: wp-includes/rest-api/endpoints/class-wp-rest-plugins-controller.php

protected function does_plugin_match_request( $request, $item ) {
		$search = $request['search'];

		if ( $search ) {
			$matched_search = false;

			foreach ( $item as $field ) {
				if ( is_string( $field ) && false !== strpos( strip_tags( $field ), $search ) ) {
					$matched_search = true;
					break;
				}
			}

			if ( ! $matched_search ) {
				return false;
			}
		}

		$status = $request['status'];

		if ( $status && ! in_array( $this->get_plugin_status( $item['_file'] ), $status, true ) ) {
			return false;
		}

		return true;
	}