EWS Folder search

I need to access a folder called TEST, which is inside the inbox, with the following code I can access the messages in the inbox;

    //Recupera todos los correos hasta un máximo de 90
public List<Correos> recuperarCorreos()
{
var    servicio = realizarConexion();
    List<Correos> correos = new List<Correos>();

    // Vincula la carpeta Bandeja de entrada al objeto de servicio.
    FolderId folderToAccess = new FolderId(WellKnownFolderName.Inbox, "***@***.es");
    Folder inbox = Folder.Bind(servicio, folderToAccess);

    ItemView view = new ItemView(90);

    // Esta llamada a método da como resultado una llamada FindItem a EWS.
    FindItemsResults<Item> findResults = servicio.FindItems(folderToAccess,view);

    foreach (var correo in findResults)
    {
        var asuntoBase = "";//** SERVICE Nagios Test:
        var remitente = correo.LastModifiedName;
        var tiempoRecibido = correo.LastModifiedTime;
        var asunto =  correo.Subject;
        String asunto2 = asunto.ToString();
        Boolean esTest = asunto2.StartsWith(asuntoBase);
        Correos c = new Correos(remitente, asunto,tiempoRecibido);


        if (true)
            correos.Add(c);

    }
    return correos;


}

But to access that subfolder (TEST) which in turn has other 4 subfolders I'm going crazy, the goal would be to access that folder TEST and their 4 children to read the emails.