Perhaps you should try some spelling variations:
doubles studium » duales studium
del literatura » de literatura, pela literatura, da literatura
di filosofia » la filosofia, e filosofia
studium di » studium die, studium i, studium ii

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 OR text) doubles studium di filosofia del literatura.
• Adding a wildcard symbol may retrieve word variants: (test or text) doubles studium di filosofia del literatura*.