my collection recored for mongodb
{
  "_id" : ObjectId("5ba60b805f13dc37a5377302"),
  "clientID" : "5ba49a5b58db5fb63b282565",
  "propertyID" : "77f3d86a9842afa8ee7a64f3bf958ef4",
  "emod" : [
    {
        "audience" : "Mobile",
        "emodID" : "5ba5e0f47b07641eeebfad37",

     },
    {
        "audience" : "Laptop",
        "emodID" : "5ba5e0f47b07641eeebfad37",
    },
    {
        "audience" : "Games",
        "emodID" : "5ba5e0f47b07641eeebfad37"
    }]
}
--------------------------------------------------
find record query

 var audienceList = ["Mobile","Laptop"];

predictionCollection.findOne({
    "clientID": '5ba49a5b58db5fb63b282565',
}, {
    emod: {
        $elemMatch: {
            'audience': {"$in":audienceList}
        }
    },

}).exec(function (err, predictionData) {
    //get output for predictionData
    emod: [ { audience: 'Mobile', emodID: [Array] } ] }


    // but i required output for
    emod: [ { audience: 'Mobile', emodID: [Array] },
            { audience: 'Laptop', emodID: [Array] }
    ] }

});