Perhaps you should try some spelling variations:
la literatura » la litterature, a literature
lage studien » frage studien, aue studien, duale studien
di filologia » di filosofia
studien di » studien die, studien dd, studien der
test lage » test large, test page, test stage

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: test lage studien di filologia ((y literatura) OR (la literatura)).
• Adding a wildcard symbol may retrieve word variants: test lage studien di filologia ((y literatura) or (la literatura))*.