Perhaps you should try some spelling variations:
bernhard buehler » bernhard fuehrer, bernhard muhler, bernhard muhlherr
bernhard fischer » gerhard fischer, bernhard ilschner, bernd fischer
bernhard becker » bernhard peter, bernhard heck, bernhard fuehrer

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: ((((bernhard becker) OR (bernhard fischer))) OR (bernhard buehler)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((bernhard becker) OR (bernhard fischer))) or (bernhard buehler))".
• Adding a wildcard symbol may retrieve word variants: ((((bernhard becker) OR (bernhard fischer))) or (bernhard buehler))*.