Perhaps you should try some spelling variations:
der filosofia » de filosofia, di filosofia, da filosofia
la literatura » la litterature, a literature
ideal study » real study, ideal setups
e filosofia » la filosofia
test ideal » test ideals, test idea, test ideas

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: "test ideal study ((der filosofia) OR (e filosofia)) la literatura".
• Adding a wildcard symbol may retrieve word variants: test ideal study ((der filosofia) OR (e filosofia)) la literatura*.