Perhaps you should try some spelling variations:
forma filosofica » storia filosofica, fra filosofia, poema filosofico
does filosofica » de filosofia, e filosofica, poema filosofico
la literatura » la litterature, a literature
case studies » case study
sets case » assets case, sets based, sets can

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: "sets case studies ((does filosofica) OR (forma filosofica)) la literatura".
• Adding a wildcard symbol may retrieve word variants: sets case studies ((does filosofica) OR (forma filosofica)) la literatura*.