Perhaps you should try some spelling variations:
"jon duncan smith" » "jon duncan sarah", "jon duncan sir", "j duncan smith", "ian duncan smith", "colin duncan smith"
"john duncan smith" » "john duncan sarah", "john duncan sir", "john dunton smith", "john dunning smith"
"jon duncan scott" » "jon duncan scotus", "jon duncan stone", "j duncan scott", "ian duncan scott", "colin duncan scott"

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: (((("jon duncan smith") OR ("jon duncan scott"))) OR ("john duncan smith")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"jon duncan smith\") OR (\"jon duncan scott\"))) or (\"john duncan smith\"))".
• Removing quotes may allow a broader search: (((( jon duncan smith ) OR ( jon duncan scott ))) or ( john duncan smith )).
• Adding a wildcard symbol may retrieve word variants: (((("jon duncan smith") OR ("jon duncan scott"))) or ("john duncan smith"))*.