That is the film. Sorry, when I said search for, I meant to buy online. Unless you have time.to.waste sifting through 100s you have to rely on the seller having put Robards or Guttenberg in the title too.
If you're talking about ebay, you can put a tick in 'include description' and put Robards or Guttenberg with The Day After in a search box. Otherwise put the film's release year next to the title, e.g. 'The Day After 1983'. Or even 'The Day After TV'