Laravel 5 Redirect nothing happend

Question

I use get request to controller function , and redirect to the other website.

I use

    return Redirect::away('https://www.google.com');
    return Redirect::refresh('https://www.google.com');
    return Redirect::to('https://www.google.com');
    return redirect->away('https://www.google.com');
    return redirect->to('https://www.google.com');

but it's nothing happend ...

Can anyone help me?