Perhaps you should try some spelling variations:
la literatura » la litterature, a literature
filosofia la » filosofia da, filosofia le, filosofica da
burst duale » burst scale, bursts dual
studium e » studium _, studium 1, studium 3
studium 8 » studium _, studium 1, studium 3

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: burst duale ((studium e) OR (studium 8)) filosofia la literatura.
• Adding a wildcard symbol may retrieve word variants: burst duale ((studium e) or (studium 8)) filosofia la literatura*.