Perhaps you should try some spelling variations:
johannes fischer » johanna fischer, johan fischer, johannes liesche
johannes fechner » johannes fuhner, johannes becker, johannes feichtinger
johanna kissler » johanna fischer, johannes kindler

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