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