title: How to search for utf-8 special characters in elasticsearch?
body: <p>I have a problem to find solution of querying Unicode special chars in Elastic search.</p>
  
  <p>When i create this index:</p>
  
  <pre><code>curl -XPUT http://localhost:9200/index/type/1 -d '{"name" : "Vrba u řeky"}'
  </code></pre>
  
  <p>and then iam trying to search for "řeky" phrase, everything is OK:</p>
  
  <pre><code>curl -XGET 'http://localhost:9200/index/type/_search?pretty=1' -d '{"query" : {"text" : 
  
  { "_all" : "řeky" }}}'
  
  {
    "took" : 1,
    "timed_out" : false,
    "_shards" : {
      "total" : 5,
      "successful" : 5,
      "failed" : 0
    },
    "hits" : {
      "total" : 1,
      "max_score" : 0.10848885,
      "hits" : [ {
        "_index" : "index",
        "_type" : "type",
        "_id" : "1",
        "_score" : 0.10848885, "_source" : {"name" : "Vrba u řeky"}
      } ]
    }
  }
  </code></pre>
  
  <p>But when I try to search for the same word escaped I find nothing:</p>
  
  <pre><code>curl -XGET 'http://localhost:9200/index/type/_search?pretty=1' -d '{"query" : {"text" : { "_all" : "\\u0159eky" }}}'
  </code></pre>
  
  <p>Is somehow possible force elastic to accept escaped strings in queries instead of raw queries?</p>
  
  <p>Thank You.</p>