Perhaps you should try some spelling variations:
science theories » science theory, science three
science studies » science study, defence studies
e morali » e morale, e morais
e moral » e morale, die moral, one moral

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 theories) OR (science studies)) ((e morali) OR (e moral)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "biblioteca di ((science theories) or (science studies)) ((e morali) OR (e moral))".
• Adding a wildcard symbol may retrieve word variants: biblioteca di ((science theories) or (science studies)) ((e morali) OR (e moral))*.