Perhaps you should try some spelling variations:
"brian duncan smith" » "bruce duncan smith", "brian duncan scott", "bra duncan smith", "brjon duncan smith", "brinnes duncan smith"
"brian duncan sarah" » "bruce duncan sarah", "brian duncan adam", "brian duncan gray", "brian duncan shaw", "bra duncan sarah", "brjon duncan sarah", "brinnes duncan sarah"
"ian duncan sir" » "a duncan sir", "jon duncan sir", "innes duncan sir", "ian duncan i"

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 ("brian duncan sarah"))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"ian duncan sir\") or (((\"brian duncan smith\") OR (\"brian duncan sarah\"))))*".
• Removing quotes may allow a broader search: (( ian duncan sir ) or ((( brian duncan smith ) OR ( brian duncan sarah ))))*.