Excuse me, I m searching for the Chapters A3, A4, B5, B6, B7 etc for "Einfuehrung in die Volkswirtschaftslehre" by Professor Klein, University of...

Excuse me, I m searching for the Chapters A3, A4, B5, B6, B7 etc for "Einfuehrung in die Volkswirtschaftslehre" by Professor Klein, University of Cologne. And why do i only get 26 Unlocks, when the advert said cleary Unlimited Access? Plus , half of the documents only have pieces of the answers and not from the whole script. Regards