Perhaps you should try some spelling variations:
sociali studies » social studies, sociale studies, societal studies
filosofia igel » filosofia de, filosofia e, filosofia en
texto sociali » texto social, text social, texts social
studies de » studies der, studies die, studies doe

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: "texto sociali studies de ((filosofia igel) OR (filosofia del)) literatur".
• Adding a wildcard symbol may retrieve word variants: texto sociali studies de ((filosofia igel) OR (filosofia del)) literatur*.