Cannot apply analyzers

curl.txt

curl -XPUT localhost:9200/mps/ -d '{
  "index": {
    "analysis": {
      "filter": {
        "my_synonym": {
          "synonyms_path": "analysers/synonyms_a_short.txt", 
          "ignore_case": true, 
          "type": "synonym"
        }, 
        "my_snow": {
          "type": "snowball", 
          "language": "English"
        }
      }, 
      "analyzer": {
        "default": {
          "filter": [
            "standard", 
            "lowercase", 
            "my_synonym", 
            "my_snow"
          ], 
          "tokenizer": "standard"
        }
      }
    }
  }
}'

curl -XPOST localhost:9200/mps/mp/ -d '{
   "content":"\n\nKeynotes\nSoreness of the lower extremities.\nFeels abandoned."
}'

curl -XPOST http://localhost:9200/mps/_refresh

curl -XPOST localhost:9200/mps/_search -d '{
   "query":{
      "bool":{
         "must":[
            {
               "term":{
                  "content":"extremity"
               }
            }
         ]
      }
   }
}'

curl -XPOST localhost:9200/mps/_search -d '{
   "query":{
      "bool":{
         "must":[
            {
               "term":{
                  "content":"lost"
               }
            }
         ]
      }
   }
}'

synonyms_a_short.txt

abandoned,isolated,isolation,forsaken,alone,helpless,helplessness,estranged,lost,lonely,lonesome,solitude,loss,losses
agoraphobia,crowd,crowds,crowded,throng,multitude,street,public,open