Perhaps you should try some spelling variations:
johannes fischer » johan fischer, johannes fechner, johannes liesche
johanna fischer » johan fischer, johann fischart, johanna kissler
johannes basch » johannes bosscha, johannes bauer, johannes barry
johannes backs » johannes hack, johannes brahms, johannes becker

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