Multiple property Full-Text Search with MongoDB in Laravel

I am using MongoDb with laravel.

Below is my users collection sample json data

{
    "_id" : "52dfcd17daf02a2e6cb396c7",
    "email" : "nikhil@gmail.com",
    "name" : "Nikhil"
}
{
    "_id" : "52e0f9a2daf02ac908064f68",
    "email" : Michael@gmail.com,
    "name" : "Michael"
}

I have created index for 2 columns in collection, which is name & email.

db.users.ensureIndex({'email':'text', 'name': 'text'})

When i search for name I get the data but when i search exactly for an email id it gives unexpected results which should have been the emailId record.

Here is my code

$users = Users::whereRaw(['$text' => ['$search' => 'example@gmail.com']])->paginate(20);

return response()->view('users.view',
[
      'users' => $users,
      'title' => 'Search results for your query: ' . $query
]);

via Chebli Mohamed