Elasticsearch not returning singular/plural matches

The default elascticsearch analyzer doesn't do stemming and this is what you need to handle plural/singular. You can try using Snowball Analyzer for your text fields to see if it works better for your use case:

curl -XPUT 'http://localhost:9200/test' -d '{    "settings" : {        "index" : {            "number_of_shards" : 1,            "number_of_replicas" : 1        }    },    "mappings" : {        "page" : {            "properties" : {                "mytextfield": { "type": "string",  "analyzer": "snowball", "store": "yes"}            }        }    }}'

Somehow snowball is not working for me... am getting errors like I mentioned in the comment to @imotov's answer.I used porter stem and it worked perfectly for me. This is the config I used:

curl -XPUT localhost:9200/index_name -d '{"settings" : {    "analysis" : {        "analyzer" : {            "stem" : {                "tokenizer" : "standard",                "filter" : ["standard", "lowercase", "stop", "porter_stem"]            }        }    }},"mappings" : {    "index_type_1" : {        "dynamic" : true,        "properties" : {            "field1" : {                "type" : "string",                "analyzer" : "stem"            },            "field2" : {                "type" : "string",                "analyzer" : "stem"            }         }      }   }}'

Since 'porterStem' filter is oversensitive, it is more suited if you use 'minimal_english' filter. 'porterStem' creates similar tokens for words such as :

searching for 'Test' will result you 'Test', 'Tests', 'Testing', 'Tester' et. al.

But 'minimal_english' will only yield - 'Test' and 'Tests'.