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