Perhaps you should try some spelling variations:
"brian duncan smith" » "bruce duncan smith", "brian duncan sarah", "brian duncan scott", "brjon duncan smith", "brinnes duncan smith"
"a duncan smith" » "a duncan sarah", "a duncan scott", "ra duncan smith", "_ duncan smith", "j duncan smith"
"ian duncan sir" » "jon duncan sir", "innes duncan sir", "ian duncan i", "ian duncan sarah"

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 sir") OR ("brian duncan smith"))) OR ("a duncan smith"))*.
• Removing quotes may allow a broader search: (((( ian duncan sir ) or ( brian duncan smith ))) or ( a duncan smith ))*.