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