Perhaps you should try some spelling variations:
"ian duncan smith" » "ian duncan sarah", "ian duncan scott", "brian duncan smith", "jon duncan smith", "innes duncan smith"
"a duncan smith" » "a duncan sarah", "a duncan scott", "j duncan smith", "m duncan smith", "r duncan smith"
"ra duncan smith" » "ra duncan sarah", "ra duncan scott", "mr duncan smith", "j duncan smith", "m duncan smith", "rj duncan smith", "rm duncan smith", "rr duncan smith"
"_ duncan smith" » "_ duncan sarah", "_ duncan scott", "_ dunciad smith"
"a duncan sir" » "a duncan i", "a duncan sarah", "j duncan sir", "m duncan sir", "r 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: (("ian duncan smith") OR ((((((("a duncan smith") OR ("ra duncan smith"))) OR ("a duncan sir"))) OR ("_ duncan smith")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"ian duncan smith\") or (((((((\"a duncan smith\") OR (\"ra duncan smith\"))) or (\"a duncan sir\"))) or (\"_ duncan smith\"))))".
• Removing quotes may allow a broader search: (( ian duncan smith ) or ((((((( a duncan smith ) OR ( ra duncan smith ))) or ( a duncan sir ))) or ( _ duncan smith )))).
• Adding a wildcard symbol may retrieve word variants: (("ian duncan smith") or ((((((("a duncan smith") OR ("ra duncan smith"))) or ("a duncan sir"))) or ("_ duncan smith"))))*.