how to iterate over a list of list in jinja

You still need to output the loop variables inside braces.

{% for result in results %}
    <tr>
        <td>{{ result[0] }}</td>
        <td>{{ result[1] }}</td>
        <td>{{ result[2] }}</td>
    </tr>
{% endfor %}

Also, consider a nested for loop:

{% for result in results %}
    <tr>
    {% for elem in result %}
        <td>{{elem}}</td>
    {% endfor %}
    </tr>
{% endfor %}