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 janse van steenis" (Expand Search), "cornelis gijsbert gerrit dang 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 henry jan van steenis" » "dscornelis ginsberg henry jan van steensel" (Expand Search), "dscornelis ginsberg henry j van steenis" (Expand Search), "dscornelis ginsberg henry a van steenis" (Expand Search), "dscornelis ginsberg henry jr van steenis" (Expand Search), "dscornelis ginsberg henry jan jan steenis" (Expand Search), "dscornelis ginsberg henry janse van steenis" (Expand Search), "dscornelis ginsberg henry dang van steenis" (Expand Search), "dscornelius ginsberg henry jan van steenis" (Expand Search), "dscornelia ginsberg henry jan van steenis" (Expand Search), "dscorners ginsberg henry jan van steenis" (Expand Search), "dscornelis ginsburg henry jan 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 henry jan van steenis"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"cornelis gijsbert gerrit jan van steenis\") OR (\"dscornelis ginsberg henry jan van steenis\"))*".
• Removing quotes may allow a broader search: (( cornelis gijsbert gerrit jan van steenis ) OR ( dscornelis ginsberg henry jan van steenis ))*.