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

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