Perhaps you should try some spelling variations:
"ra duncan smith" » "ra duncan sarah", "ra duncan scott", "_ duncan smith", "mr duncan smith"
"m duncan smith" » "m duncan sarah", "m duncan scott", "mr duncan smith", "_ duncan smith"
"j duncan sir" » "j duncan i", "j duncan sarah", "_ duncan sir", "mr duncan sir"

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