public function whereMultiMatch(string $query, array $fields, $fuzziness = "auto")
    {
        $param = [
            "multi_match" => [
                "query" => $query,
                "fields" => $fields,
                "fuzziness" => $fuzziness
            ]
        ];
        $this->elasticQuery[] = $param;
        return $this;
    }