Perhaps you should try some spelling variations:
scale studies » case studies, scale study
div filosofia » di filosofia, de filosofia, da filosofia
y literatura » la literatura
studies div » studies die, studies drive, studies diet
vast scale » bast scale, coast scale, best scale

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: vast scale studies div filosofia ((y literatura) OR (a literature))*.