I can't understand why Elasticsearch can't find Europe with a snowball analyzer...

analysis.yaml

text:
  - "Western Europe antiquities"
  - "Antiquités de l'Europe occidentale"

analyzer:
    snowball_en:
        type: snowball
        language: English
    snowball_fr:
        type: custom
        tokenizer: standard
        filter:
            - standard
            - lowercase
            - elision_fr
            - stop_fr
            - my_asciifolding
            - snowball_fr

filter:
    my_asciifolding:
        type: asciifolding
        preserve_original: true
    elision_fr:
        type: elision
        articles:
            - l
            - d
            - m
    stop_fr:
        type: stop
        language: _french_
    snowball_fr:
        type: snowball
        langugage: French

documents.yaml

_index: collections
_type: collection
_id: 6
name:
    en: "Western Europe antiquities"
    fr: "Antiquités de l'Europe occidentale"
---
_index: collections
_type: collection
_id: 13
name:
    en: "Islamic art"
    fr: "Arts de l'Islam"

mappings.yaml

collection:
    properties:
        name:
            properties:
                en:
                    type: string
                    analyzer: snowball
                fr:
                    type: string
                    analyzer: snowball_fr

play.sh

#!/bin/bash

export ELASTICSEARCH_ENDPOINT="http://localhost:9200"

# Create indexes

curl -XPUT "$ELASTICSEARCH_ENDPOINT/collections" -d '{
    "settings": {
        "analysis": {
            "text": [
                "Western Europe antiquities",
                "Antiquités de l\'Europe occidentale"
            ],
            "analyzer": {
                "snowball_en": {
                    "type": "snowball",
                    "language": "English"
                },
                "snowball_fr": {
                    "type": "custom",
                    "tokenizer": "standard",
                    "filter": [
                        "standard",
                        "lowercase",
                        "elision_fr",
                        "stop_fr",
                        "my_asciifolding",
                        "snowball_fr"
                    ]
                }
            },
            "filter": {
                "my_asciifolding": {
                    "type": "asciifolding",
                    "preserve_original": true
                },
                "elision_fr": {
                    "type": "elision",
                    "articles": [
                        "l",
                        "d",
                        "m"
                    ]
                },
                "stop_fr": {
                    "type": "stop",
                    "language": "_french_"
                },
                "snowball_fr": {
                    "type": "snowball",
                    "langugage": "French"
                }
            }
        }
    },
    "mappings": {
        "collection": {
            "properties": {
                "name": {
                    "properties": {
                        "en": {
                            "type": "string",
                            "analyzer": "snowball"
                        },
                        "fr": {
                            "type": "string",
                            "analyzer": "snowball_fr"
                        }
                    }
                }
            }
        }
    }
}'

# Index documents
curl -XPOST "$ELASTICSEARCH_ENDPOINT/_bulk?refresh=true" -d '
{"index":{"_index":"collections","_type":"collection","_id":6}}
{"name":{"en":"Western Europe antiquities","fr":"Antiquités de l\'Europe occidentale"}}
{"index":{"_index":"collections","_type":"collection","_id":13}}
{"name":{"en":"Islamic art","fr":"Arts de l\'Islam"}}
'

# Do searches

curl -XPOST "$ELASTICSEARCH_ENDPOINT/_search?pretty" -d '
{
    "query": {
        "query_string": {
            "query": "Europe",
            "analyzer": "snowball_fr"
        }
    },
    "explain": true
}
'

curl -XPOST "$ELASTICSEARCH_ENDPOINT/_search?pretty" -d '
{
    "query": {
        "query_string": {
            "query": "Europe",
            "analyzer": "snowball"
        }
    },
    "explain": true
}
'

curl -XPOST "$ELASTICSEARCH_ENDPOINT/_search?pretty" -d '
{
    "query": {
        "query_string": {
            "query": "Europe",
            "analyzer": "standard"
        }
    },
    "explain": true
}
'

curl -XPOST "$ELASTICSEARCH_ENDPOINT/_search?pretty" -d '
{
    "query": {
        "query_string": {
            "query": "name.en:Europe",
            "analyzer": "snowball"
        }
    },
    "explain": true
}
'

curl -XPOST "$ELASTICSEARCH_ENDPOINT/_search?pretty" -d '
{
    "query": {
        "query_string": {
            "query": "Europe*",
            "analyzer": "snowball"
        }
    },
    "explain": true
}
'

play.yaml

# Auto generated by Found's Play-tool at 2014-10-23T09:23:09+02:00
version: 0
title: "Why ES can't find Europe?"
description: "I can't understand why Elasticsearch can't find Europe with a snowball analyzer..."

searches.yaml

# Sample searches. Press Ctrl-Enter to run.
# Press Shift-Enter to go to focused mode for the selected editor.
# Click "Help" for more shortcuts.

query:
    query_string:
        query: Europe
        analyzer: snowball_fr
explain: true

# -> Not found

---
# This is search #2.

query:
    query_string:
        query: Art
        analyzer: snowball
explain: true

# -> Not found

---
# This is search #3.

query:
    query_string:
        query: Europe
        analyzer: standard
explain: true

# -> Found

---
# This is search #4.

query:
    query_string:
        query: "name.en:Europe"
        analyzer: snowball
explain: true

# -> Found

---
# This is search #5.

query:
    query_string:
        query: "Europe*"
        analyzer: snowball
explain: true

# -> Found