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