title: executing multimatch ElasticSearch with boolean operations in query
body: <p>Can I execute multimatch search with ElasticSearch and NEST in a way I can pass query with boolean operations inside the query? It appears all terms I passed to multimatch are by default linked with OR (which can be changed to other operator).</p>
  
  <p>I'd like ES to evaluate boolean operators from the query, ex. "A &amp;&amp; B || C" and the same search multiple fields. </p>