400. That’s an error.

Google cannot redirect you to http://dogbert.abebooks.com/servlet/SearchResults?tn=Disputationes+indulgentiis+adversus+nostrae+tempestatis+haereticos+ad+patres+S.+concilii+Tridentini because the request was invalid.

This might be because the link was created a long time ago. Try your search again on Google. That’s all we know.