Perhaps you should try some spelling variations:
"cornelis ginsberg gerrit jan jan steenis" » "cornelis ginsberg geert jan jan steenis" (Expand Search), "cornelis ginsberg gerrit janse jan steenis" (Expand Search), "cornelis ginsberg gerrit jang jae steenis" (Expand Search), "cornelis ginsburg gerrit jan jan steenis" (Expand Search)
"cornelis gijsbert gerrit kuan jan steenis" » "cornelis gijsbert gerrit kuan tjian steenis" (Expand Search), "cornelis gijsbert gerrit kuang joan steenis" (Expand Search), "cornelis gijsbert gerrit kuan kian steenis" (Expand Search), "cornelis gilbert gerrit kuan jan steenis" (Expand Search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("cornelis ginsberg gerrit jan jan steenis") OR ("cornelis gijsbert gerrit kuan jan steenis"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"cornelis ginsberg gerrit jan jan steenis\") OR (\"cornelis gijsbert gerrit kuan jan steenis\"))".
• Removing quotes may allow a broader search: (( cornelis ginsberg gerrit jan jan steenis ) OR ( cornelis gijsbert gerrit kuan jan steenis )).
• Adding a wildcard symbol may retrieve word variants: (("cornelis ginsberg gerrit jan jan steenis") OR ("cornelis gijsbert gerrit kuan jan steenis"))*.