Perhaps you should try some spelling variations:
"historische epistemologie" » "historical epistemology"
"historische soziologie" » "historischen soziologie"
"historische geologie" » "historischen soziologie", "historische geobotanik", "historical geology"

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: (((("historische epistemologie") OR ("historische geologie"))) OR ("historische soziologie")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"historische epistemologie\") OR (\"historische geologie\"))) or (\"historische soziologie\"))".
• Removing quotes may allow a broader search: (((( historische epistemologie ) OR ( historische geologie ))) or ( historische soziologie )).
• Adding a wildcard symbol may retrieve word variants: (((("historische epistemologie") OR ("historische geologie"))) or ("historische soziologie"))*.