You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api>
  <query>
    <search>
      <p ns="0" title="Setup your own server for 5$ a month" snippet="...e, because server that we are going to create is going to be self-managed, &lt;span class=&#039;searchmatch&#039;&gt;meaning&lt;/span&gt;, you will be your own server administrator.&#10;" size="14201" wordcount="2294" timestamp="2015-10-13T05:03:56Z" />
    </search>
  </query>
</api>