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