Perhaps you should try some spelling variations:
"a.w brown" » "a brown", "ann brown", "2.2 brown"
"a.r brown" » "j.r brown", "e.a.r brown", "fair brown"
"a.g brown" » "t.g browne", "2.2 brown", "4.4 brown"
"a.b brown" » "2.2 brown", "4.4 brown", "6.6 brown"

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: (((("a.w brown") OR ("a.r brown"))) OR ((("a.g brown") OR ("a.b brown")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"a.w brown\") or (\"a.r brown\"))) or (((\"a.g brown\") OR (\"a.b brown\"))))".
• Removing quotes may allow a broader search: (((( a.w brown ) or ( a.r brown ))) or ((( a.g brown ) OR ( a.b brown )))).
• Adding a wildcard symbol may retrieve word variants: (((("a.w brown") or ("a.r brown"))) or ((("a.g brown") OR ("a.b brown"))))*.