Perhaps you should try some spelling variations:
del literatura » de literatura, pela literatura, e literatura
da literatura » la literatura, a literatura, de literatura
5 filosofia » a filosofia, y filosofia, _ filosofia
e filosofia » la filosofia
its das » its adas, its days, its day

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: its das studium ((5 filosofia) OR (e filosofia)) ((del literatura) OR (da literatura)).
• Adding a wildcard symbol may retrieve word variants: its das studium ((5 filosofia) or (e filosofia)) ((del literatura) or (da literatura))*.