title: XPath get texts inside a "might existed" tag
body: <p>I have a HTML which contains some tags like below:</p>
  
  <pre><code>&lt;div id="SNT"&gt;text1&lt;/div&gt;
  &lt;div id="SNT"&gt;text2&lt;/div&gt;
  &lt;div id="SNT"&gt;&lt;span style='color: #EFFFFF'&gt;text3&lt;/span&gt;&lt;/div&gt;
  &lt;div id="SNT"&gt;&lt;span style='color: #EFFFFF'&gt;text4&lt;/span&gt;&lt;/div&gt;
  </code></pre>
  
  <p>how can I get <strong>all</strong> the <code>text</code>s included in all <code>&lt;div&gt;</code> tags using XPath?</p>
  
  <p>i.e.:</p>
  
  <pre><code>text1  
  text2  
  text3  
  text4   
  </code></pre>