Perhaps you should try some spelling variations:
former based » farmer based, form based, forms based
edwards fair » towards fair, edwards ar, edwards david
device based » devices based, service based
edwards a » edwards _, edwards a.m
a former » a formal, a form

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: (( edwards a former based ) OR ( edwards fair ((office based) OR (device based)) )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( edwards a former based ) or ( edwards fair ((office based) OR (device based)) ))".
• Adding a wildcard symbol may retrieve word variants: (( edwards a former based ) or ( edwards fair ((office based) OR (device based)) ))*.