Perhaps you should try some spelling variations:
science stories » science studies, science theories
science series » science services, science theories, sciences serious
e morali » e morale, e moral
e morais » de morais, b morais, e morris

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: biblioteca di ((science stories) OR (science series)) ((e morali) OR (e morais)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "biblioteca di ((science stories) OR (science series)) ((e morali) or (e morais))".
• Adding a wildcard symbol may retrieve word variants: biblioteca di ((science stories) OR (science series)) ((e morali) or (e morais))*.