Perhaps you should try some spelling variations:
"arthur robert van hippel" » "arthur robert von hippel", "arthur robert van poppel", "arthur robert van impel"
"arthur robert v hippel" » "arthur robert von hippel", "arthur robert j dippel"

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: "((\"arthur robert van hippel\") OR (\"arthur robert v hippel\"))".
• Removing quotes may allow a broader search: (( arthur robert van hippel ) OR ( arthur robert v hippel )).
• Adding a wildcard symbol may retrieve word variants: (("arthur robert van hippel") OR ("arthur robert v hippel"))*.