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