Perhaps you should try some spelling variations:
la literatura » la litterature, a literature
der filosofia » de filosofia, e filosofia, da filosofia
ideas studie » ideas studies, deas studies, areas studio
di filosofia » la filosofia, e filosofia
test ideas » best ideas, test idea, just 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 ideas studie ((der filosofia) OR (di filosofia)) la literatura".
• Adding a wildcard symbol may retrieve word variants: test ideas studie ((der filosofia) OR (di filosofia)) la literatura*.