<table class = "narr_table">
    <tr>
      <td>
            <span> Text 1 </span>
            <span> helper text </span>
      </td>
    </tr>
   ..
   </table>

.narr_table tr td span
    {
        display: block;
    }

    .narr_table tr td  span:first-child
    {
        page-break-after: avoid;
    }

    .narr_table tr td span:first-child + span
    {
        page-break-before: avoid;
    }