Perhaps you should try some spelling variations:
"cornelis gijsbert gerrit jan jan steensel" » "cornelis gijsbert geert jan jan steensel" (Expand Search), "cornelis gijsbert gerrit janse jan steensel" (Expand Search), "cornelis gijsbert gerrit jang jae steensel" (Expand Search), "cornelis gijsbert gerrit kuan jan steensel" (Expand Search), "cornelis gilbert gerrit jan jan steensel" (Expand Search)
"cornelis ginsberg gerrit jan van steensel" » "cornelis ginsberg geert jan van steensel" (Expand Search), "cornelis ginsberg gerrit janse van steensel" (Expand Search), "cornelis ginsberg gerrit dang van steensel" (Expand Search), "cornelis ginsberg gerrit tang van steensel" (Expand Search), "cornelis ginsburg gerrit jan van steensel" (Expand Search)

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: "((\"cornelis gijsbert gerrit jan jan steensel\") OR (\"cornelis ginsberg gerrit jan van steensel\"))~".
• Removing quotes may allow a broader search: (( cornelis gijsbert gerrit jan jan steensel ) OR ( cornelis ginsberg gerrit jan van steensel ))~.
• Adding a wildcard symbol may retrieve word variants: (("cornelis gijsbert gerrit jan jan steensel") OR ("cornelis ginsberg gerrit jan van steensel"))*.