Perhaps you should try some spelling variations:
daten studies » date studies, patent studies, data studies
a literatura » la literatura, y literatura, a literatur
e filosofia » la filosofia
text daten » text datei, 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 daten studies e filosofia ((a literatura) OR (a literature))".
• Adding a wildcard symbol may retrieve word variants: text daten studies e filosofia ((a literatura) OR (a literature))*.