Perhaps you should try some spelling variations:
"cornelis gijsbert gerrit jan van steenis" » "cornelis gijsbert gerrit jan van steensel" (Expand Search), "cornelis gijsbert geert jan van steenis" (Expand Search), "cornelis gijsbert gerrit jan jan steenis" (Expand Search), "cornelis gijsbert gerrit dang van steenis" (Expand Search), "cornelis gijsbert gerrit tang van steenis" (Expand Search), "cornelius gijsbert gerrit jan van steenis" (Expand Search), "cornelia gijsbert gerrit jan van steenis" (Expand Search), "corners gijsbert gerrit jan van steenis" (Expand Search), "cornelis gilbert gerrit jan van steenis" (Expand Search)
"dscornelis ginsberg gerrit janse van steenis" » "dscornelis ginsberg gerrit janse van steensel" (Expand Search), "dscornelis ginsberg geert janse van steenis" (Expand Search), "dscornelis ginsberg gerrit janse jan steenis" (Expand Search), "dscornelius ginsberg gerrit janse van steenis" (Expand Search), "dscornelia ginsberg gerrit janse van steenis" (Expand Search), "dscorners ginsberg gerrit janse van steenis" (Expand Search), "dscornelis ginsburg gerrit janse van 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 gijsbert gerrit jan van steenis") OR ("dscornelis ginsberg gerrit janse van steenis"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"cornelis gijsbert gerrit jan van steenis\") OR (\"dscornelis ginsberg gerrit janse van steenis\"))*".
• Removing quotes may allow a broader search: (( cornelis gijsbert gerrit jan van steenis ) OR ( dscornelis ginsberg gerrit janse van steenis ))*.