Perhaps you should try some spelling variations:
"marcus foth a" » "marcus ruth a", "marcus 4th a", "marcus horeth a", "marcus forth a", "marcus both a", "marcus moth a"
"marcus roth a" » "marcus ruth a", "marc roth a", "marcus 4th a", "marcus roth _", "marcus roth k"
"angus smith a" » "angela smith a", "marcus smith a", "angus smith _"

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: (((("marcus foth a") OR ("marcus roth a"))) OR ("angus smith a")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"marcus foth a\") OR (\"marcus roth a\"))) or (\"angus smith a\"))".
• Removing quotes may allow a broader search: (((( marcus foth a ) OR ( marcus roth a ))) or ( angus smith a )).
• Adding a wildcard symbol may retrieve word variants: (((("marcus foth a") OR ("marcus roth a"))) or ("angus smith a"))*.