title: xpath to get Node containing text
body: <p>I tried to search for nodes containing text 'Yahoo' under '/doc/story/content', it returns 'content' node, but I need exact text node that contains 'Yahoo' or it's parent </p>
  
  <pre><code>&lt;doc&gt;
      &lt;story&gt;
          &lt;content id="201009281450332423"&gt;
              &lt;ul&gt;MSW NYNES NYPG1 DILMA&lt;/ul&gt;
              &lt;p&gt; &lt;k&gt; Yahoo, made &lt;/k&gt; it nice &lt;/p&gt;
              &lt;p&gt;
                 &lt;author&gt;-v-&lt;/author&gt;
              &lt;/p&gt;
          &lt;/content&gt;
      &lt;/story&gt;
  &lt;/doc&gt;
  </code></pre>
  
  <p>Xpath: <code>"/doc/story/content[contains(., 'Yahoo')]"</code></p>