Perhaps you should try some spelling variations:
"engelhard von buchern" » "engelhardt john buchern", "engelhardt jan buchern", "engelhart yoni buchern", "engelhard von burgern", "engelhard von lochern"
"gebhard von buchern" » "gerhard von buchern", "gerard von buchern", "bernhard von buchern", "gebhard von burgern", "gebhard von lochern"

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: "((\"gebhard von buchern\") OR (\"engelhard von buchern\"))".
• Removing quotes may allow a broader search: (( gebhard von buchern ) OR ( engelhard von buchern )).
• Adding a wildcard symbol may retrieve word variants: (("gebhard von buchern") OR ("engelhard von buchern"))*.