Perhaps you should try some spelling variations:
datei studies » date studies, water studies, data studies
la literatura » la litterature, a literature
a literatura » a literature, y literatura, a literatur
3 filosofia » e filosofia, a filosofia, y filosofia
text datei » text daten, text data, text dataset

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: "text datei studies 3 filosofia ((a literatura) OR (la literatura))".
• Adding a wildcard symbol may retrieve word variants: text datei studies 3 filosofia ((a literatura) OR (la literatura))*.