Perhaps you should try some spelling variations:
lap filosofia » la filosofia, a filosofia, na filosofia
da filosofia » la filosofia, di filosofia, a filosofia
belt scale » belt scales, belt stable, belt scars
belt case » belts case, belt based, belt gas
literatur » literature

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: ((belt scale) OR (belt case)) studies ((lap filosofia) OR (da filosofia)) e literatur.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((belt scale) or (belt case)) studies ((lap filosofia) OR (da filosofia)) e literatur".
• Adding a wildcard symbol may retrieve word variants: ((belt scale) or (belt case)) studies ((lap filosofia) OR (da filosofia)) e literatur*.