<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-select/1.10.0/js/bootstrap-select.min.js"></script>
<link href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-select/1.10.0/css/bootstrap-select.min.css" rel="stylesheet" />
<div class="container">
<div class="row">
<div class="col-xs-12">
<div class="box">
<div class="box-body">
<form>
<div class="form-group row">
<label for="" class="col-sm-2 form-control-label">Country</label>
<div class="col-sm-10">
<select class="form-control selectpicker" id="select-country" data-live-search="true">
<option data-tokens="china">China</option>
<option data-tokens="malayasia">Malayasia</option>
<option data-tokens="singapore">Singapore</option>
</select>
</div>
</div>
</form>
</div>
</div>
