Perhaps you should try some spelling variations:
"cornelis gilbert gerrit jan van steenis" » "cornelis gilbert gerrit jan van steensel" (Expand Search), "cornelis gilbert geert jan van steenis" (Expand Search), "cornelis gilbert gerrit jan jan steenis" (Expand Search), "cornelis gilbert gerrit dang van steenis" (Expand Search), "cornelis gilbert gerrit tang van steenis" (Expand Search), "cornelius gilbert gerrit jan van steenis" (Expand Search), "dscornelis gilbert gerrit jan van steenis" (Expand Search), "corners gilbert gerrit jan van steenis" (Expand Search)
"cornelia gilbert gerrit janse van steenis" » "cornelia gilbert gerrit janse van steensel" (Expand Search), "cornelia gilbert geert janse van steenis" (Expand Search), "cornelia gilbert gerrit janse jan steenis" (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 gilbert gerrit jan van steenis\") OR (\"cornelia gilbert gerrit janse van steenis\"))~".
• Removing quotes may allow a broader search: (( cornelis gilbert gerrit jan van steenis ) OR ( cornelia gilbert gerrit janse van steenis ))~.
• Adding a wildcard symbol may retrieve word variants: (("cornelis gilbert gerrit jan van steenis") OR ("cornelia gilbert gerrit janse van steenis"))*.