title: Lucene optional exact match query syntax
body: <p>I want to search a lucene index specifying search criteria for a number of fields.
  All fields are exact matches except for "title" and "content". A search term <strong>must</strong> appear in either or both of these fields</p>
  
  <p>I've tried variations on the following but must be missing something as my results aren't coming back as expected. Any help appreciated.</p>
  
  <p>(+make:dell +model:lattitude +year:2010) +title:p0175 <strong>OR</strong> +content:p0175</p>