Perhaps you should try some spelling variations:
"john charles davis" » "john charles davies", "john charles jarvis", "john charles daniels", "jean charles davis"
"john charles david" » "john charles darwin", "jean charles david"
"john charles davy" » "jean charles davy", "john charles daly", "john charles darby", "john charles dive"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("john charles davy") OR ("john charles davis"))) OR ("john charles david")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"john charles davy\") OR (\"john charles davis\"))) or (\"john charles david\"))".
• Removing quotes may allow a broader search: (((( john charles davy ) OR ( john charles davis ))) or ( john charles david )).
• Adding a wildcard symbol may retrieve word variants: (((("john charles davy") OR ("john charles davis"))) or ("john charles david"))*.