title: Detecting similar strings in Ruby.
body: <p>In my db, there are entries eg. <code>Тормозной диск</code>, <code>Диски тормозные LPR</code> etc. in <code>art_groups_arr</code> array. I would like to find all the entries similar to <code>Тормозной диск</code>, such as <code>Диски тормозные LPR</code></p>
  
  <p>This code:
  </p>
  
  <pre><code>art_groups_arr.each do |artgrarr|
    if n2.art_group.include?(artgrarr)
      non_original &lt;&lt; n2
    end
  end
  </code></pre>
  
  <p>does not find them, obviously. How can I find those similar strings?</p>