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