text: SELECT UserID, arrayEnumerateUniq(groupArray(SearchPhrase)) AS arr
  FROM 
  (
      SELECT UserID, SearchPhrase
      FROM test.hits
      WHERE CounterID = 1704509 AND UserID IN
      (
          SELECT UserID
          FROM test.hits
          WHERE notEmpty(SearchPhrase) AND CounterID = 1704509
          GROUP BY UserID
          HAVING count() > 1
      )
      ORDER BY UserID, WatchID
  )
  WHERE notEmpty(SearchPhrase)
  GROUP BY UserID
  HAVING length(arr) > 1
  ORDER BY UserID
  LIMIT 20
  