Perhaps you should try some spelling variations:
la literatura » la litterature, a literature
filosofia la » filosofia da, filosofia le, filosofica da
belt scale » belt scales, belt stable, belt scars
studien la » studien lap, studien a, studien l
belt case » belts case, belt based, belt gas

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((belt scale) OR (belt case)) studien la filosofia la literatura".
• Adding a wildcard symbol may retrieve word variants: ((belt scale) OR (belt case)) studien la filosofia la literatura*.