Perhaps you should try some spelling variations:
"brian duncan smith" » "ian duncan smith", "bruce duncan smith", "brian duncan sarah", "brian duncan scott"
"a duncan smith" » "a duncan sarah", "a duncan scott", "ra duncan smith", "j duncan smith", "m duncan smith"
"_ duncan smith" » "_ duncan sarah", "_ duncan scott", "_ dunciad smith"
"a duncan sir" » "a duncan i", "a duncan sarah", "ra duncan sir", "j duncan sir", "m 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: (("brian duncan smith") OR ((((("a duncan smith") OR ("a duncan sir"))) OR ("_ duncan smith")))).
• Removing quotes may allow a broader search: (( brian duncan smith ) or ((((( a duncan smith ) or ( a duncan sir ))) or ( _ duncan smith )))).
• Adding a wildcard symbol may retrieve word variants: (("brian duncan smith") or ((((("a duncan smith") or ("a duncan sir"))) or ("_ duncan smith"))))*.