jQuery this find не работает

$(".form_send").submit(function() { 
  var data = $(this).serialize(); 
  $.ajax({ 
    type: 'POST', 
    url: 'index.php?route=information/contact/send', 
    dataType: 'json', 
    data: data, 
    success: function(data) { 
      if (data.error) { 
        $(this).find('.result').html(data.error); //Не работает 
        $('.form_send .result').html(data.error); //Работает 
      } else { 
        console.log(data); 
      } 
      $('.form_send')[0].reset(); 
    }, 
    error: function(error) { 
      console.log('error; ' + error); 
    } 
  }); 
  return false; 
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> 
<form class="tg-themeform tg-contactusform form_send"> 
  <fieldset> 
    <div class="row"> 
      <div class="col-md-6 col-sm-6 col-xs-12"> 
        <div class="form-group"> 
          <input type="text" class="form-control" name="user_name" placeholder="Ваше имя"> 
        </div> 
      </div> 
      <div class="col-md-6 col-sm-6 col-xs-12"> 
        <div class="form-group"> 
          <input type="text" class="form-control" name="user_subject" placeholder="Тема"> 
        </div> 
      </div> 
      <div class="col-md-6 col-sm-6 col-xs-12"> 
        <div class="form-group"> 
          <input type="email" class="form-control" name="user_email" placeholder="Email"> 
        </div> 
      </div> 
      <div class="col-md-6 col-sm-6 col-xs-12"> 
        <div class="form-group"> 
          <input type="text" class="form-control mask" name="user_phone" placeholder="Телефон"> 
        </div> 
      </div> 
      <div class="col-sm-12 col-xs-12"> 
        <div class="form-group"> 
          <textarea name="user_message" placeholder="Сообщение" class="tg-textarea"></textarea> 
        </div> 
      </div> 
      <div class="col-sm-12 col-xs-12"> 
        <button class="tg-btn" type="submit"><span>Отправить</span></button> 
        <div class="result"></div> 
      </div> 
    </div> 
  </fieldset> 
</form>