This description that stands after the address is called Slug. In this case, what you need to do is a specific route handler. For example:
Appstart Routeconfig.Cs
routes.MapRoute(
    "Default",
    "{controller}/{action}/{id}",
    new { controller = "Default", action = "Index", id = UrlParameter.Optional }
).RouteHandler = new MeuManipuladorDeRota();
Infrastructure Meumanipuladorderota.Cs
public class MeuManipuladorDeRota : MvcRouteHandler
{
    protected override IHttpHandler GetHttpHandler(RequestContext requestContext)
    {
        var url = requestContext.HttpContext.Request.Path.TrimStart('/');
        if (!string.IsNullOrEmpty(url))
        {
            ItemDePagina item = GerenciadorDeRedirecionamento.ObterPaginaPorUrl(url);
            if (item != null)
            {
                MontarRequisicao(item.Controller, 
                    item.Action ?? "Index", 
                    item.ConteudoId .ToString(), 
                    requestContext);
            }
        }
        return base.GetHttpHandler(requestContext);
    }
    private static void MontarRequisicao(string controller, string action, string id, RequestContext requestContext)
    {
        if (requestContext == null)
        {
            throw new ArgumentNullException("requestContext");
        }
        requestContext.RouteData.Values["controller"] = controller;
        requestContext.RouteData.Values["action"] = action;
        requestContext.RouteData.Values["id"] = id;
    }
}
Viewmodels Itemdepagina.Cs
public class ItemDePagina {
    public String Controller { get; set; }
    public String Action { get; set; }
    public int ConteudoId { get; set; }
}
Managed Infrastructure redirection.Cs
public static class GerenciadorDeRedirecionamento
{
    public static ItemDePagina ObterPaginaPorUrl(string url)
    {
        ItemDePagina item = null;
        /* Aqui você pesquisa na entidade pela descrição, passando o parâmetro url. */
        /* Este é o ponto mais importante da lógica, que é onde você vai pesquisar o item de acordo com as suas regras de negócio. */
        /* Depois você monta um objeto ItemDePagina (no caso, item) e o devolve. */
        return item;
    }
}
							
							
						 
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