Perhaps you should try some spelling variations:
"cornelis gilbert gerrit jan jan steenis" » "cornelis gilbert geert jan jan steenis" (Expand Search), "cornelis gilbert gerrit janse jan steenis" (Expand Search), "cornelis gilbert gerrit jang jae steenis" (Expand Search), "cornelis gilbert gerrit kuan jan steenis" (Expand Search)
"cornelis gijsbert geertz jan jan steenis" » "cornelis gijsbert geert jan jan steenis" (Expand Search), "cornelis gijsbert geertz janse jan steenis" (Expand Search), "cornelis gijsbert geertz jang jae steenis" (Expand Search), "cornelis gijsbert geertz kuan jan steenis" (Expand Search), "cornelis ginsberg geertz jan 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 gilbert gerrit jan jan steenis") OR ("cornelis gijsbert geertz jan jan steenis"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"cornelis gilbert gerrit jan jan steenis\") OR (\"cornelis gijsbert geertz jan jan steenis\"))".
• Removing quotes may allow a broader search: (( cornelis gilbert gerrit jan jan steenis ) OR ( cornelis gijsbert geertz jan jan steenis )).
• Adding a wildcard symbol may retrieve word variants: (("cornelis gilbert gerrit jan jan steenis") OR ("cornelis gijsbert geertz jan jan steenis"))*.