Perhaps you should try some spelling variations:
"william winston clifford" » "william kingdon clifford", "william walton clifford", "william twistors clifford", "william kingston clifford", "william whiston clifford", "william weston clifford"
"william wilson clifford" » "william walton clifford", "william wilson lanford", "william mixon clifford", "william whiston clifford"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"william winston clifford\") OR (\"william wilson clifford\"))".
• Removing quotes may allow a broader search: (( william winston clifford ) OR ( william wilson clifford )).
• Adding a wildcard symbol may retrieve word variants: (("william winston clifford") OR ("william wilson clifford"))*.