Perhaps you should try some spelling variations:
"dscornelis gijsbert gerrit jan jan steensel" » "dscornelis gijsbert gerrit jan van steensel" (Expand Search), "dscornelis gijsbert geert jan jan steensel" (Expand Search), "dscornelis gijsbert gerrit janse jan steensel" (Expand Search), "dscornelis gijsbert gerrit jang jae steensel" (Expand Search), "dscornelis gijsbert gerrit kuan jan steensel" (Expand Search), "cornelis gijsbert gerrit jan jan steensel" (Expand Search), "dscornelis ginsberg gerrit jan jan steensel" (Expand Search)
"dscornelis gilbert gerrit jan van steenis" » "dscornelis gilbert gerrit jan van steensel" (Expand Search), "dscornelis gilbert geert jan van steenis" (Expand Search), "dscornelis gilbert gerrit janse van steenis" (Expand Search), "dscornelis gilbert gerrit dang van steenis" (Expand Search), "dscornelis gilbert gerrit tang van steenis" (Expand Search), "cornelis gilbert gerrit 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: (("dscornelis gilbert gerrit jan van steenis") OR ("dscornelis gijsbert gerrit jan jan steensel"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"dscornelis gilbert gerrit jan van steenis\") OR (\"dscornelis gijsbert gerrit jan jan steensel\"))".
• Removing quotes may allow a broader search: (( dscornelis gilbert gerrit jan van steenis ) OR ( dscornelis gijsbert gerrit jan jan steensel )).
• Adding a wildcard symbol may retrieve word variants: (("dscornelis gilbert gerrit jan van steenis") OR ("dscornelis gijsbert gerrit jan jan steensel"))*.