Perhaps you should try some spelling variations:
"und sozialwissenschaftler" » "und sozialwissenschaften", "und sozialwissenschaftliche"
"die sozialwissenschaften" » "den sozialwissenschaften", "der sozialwissenschaften", "und sozialwissenschaften"

Try widening your search to All Fields.

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: (("die sozialwissenschaften") OR ("und sozialwissenschaftler")).
• Removing quotes may allow a broader search: (( die sozialwissenschaften ) or ( und sozialwissenschaftler )).
• Adding a wildcard symbol may retrieve word variants: (("die sozialwissenschaften") or ("und sozialwissenschaftler"))*.