Perhaps you should try some spelling variations:
johannes fischer » johanna fischer, johan fischer, johannes fechner
johannes basch » johannes bosscha, johannes bauer, johannes backs
johannes hack » johannes hancke, johannes backs, johannes quack

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: ((johannes fischer) OR (((johannes basch) OR (johannes hack)))).
• Adding a wildcard symbol may retrieve word variants: ((johannes fischer) or (((johannes basch) or (johannes hack))))*.