Perhaps you should try some spelling variations:
"overh.born.dt.gel.hno-heilkunde 15.15" » "overh.born.dt.gel.hno-heilkunde 5.1", "overyh.born.dt.gel.hno-heilkunde 15.15", "oeverh.born.dt.gel.hno-heilkunde 15.15", "ovierh.born.dt.gel.hno-heilkunde 15.15", "overy.born.dt.gel.hno-heilkunde 15.15", "overs.born.dt.gel.hno-heilkunde 15.15", "overb.born.dt.gel.hno-heilkunde 15.15", "over.born.dt.gel.hno-heilkunde 15.15", "overt.born.dt.gel.hno-heilkunde 15.15"
"verh.ben.dt.gels.hno-heilkunde 1991" » "verh.ben.dt.gels.hno-heilkunde 1", "verh.ben.dt.gels.hno-heilkunde 10", "verh.ben.dt.gels.hno-heilkunde 16", "veryh.ben.dt.gels.hno-heilkunde 1991", "everh.ben.dt.gels.hno-heilkunde 1991", "vierh.ben.dt.gels.hno-heilkunde 1991", "very.ben.dt.gels.hno-heilkunde 1991", "vers.ben.dt.gels.hno-heilkunde 1991", "verb.ben.dt.gels.hno-heilkunde 1991", "verh.been.dt.gels.hno-heilkunde 1991", "verh.ben.dt.geld.hno-heilkunde 1991"
"ver.bern.dt.gets.hno-heilkunde 11" » "ver.bern.dt.gets.hno-heilkunde 1", "ver.bern.dt.gets.hno-heilkunde 10", "ver.bern.dt.gets.hno-heilkunde 16", "very.bern.dt.gets.hno-heilkunde 11", "ever.bern.dt.gets.hno-heilkunde 11", "vier.bern.dt.gets.hno-heilkunde 11", "ver.been.dt.gets.hno-heilkunde 11", "ver.bern.dt.get.hno-heilkunde 11"

Try widening your search to All Fields.

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: (((("ver.bern.dt.gets.hno-heilkunde 11") OR ("verh.ben.dt.gels.hno-heilkunde 1991"))) OR ("overh.born.dt.gel.hno-heilkunde 15.15")).
• Removing quotes may allow a broader search: (((( ver.bern.dt.gets.hno-heilkunde 11 ) or ( verh.ben.dt.gels.hno-heilkunde 1991 ))) or ( overh.born.dt.gel.hno-heilkunde 15.15 )).
• Adding a wildcard symbol may retrieve word variants: (((("ver.bern.dt.gets.hno-heilkunde 11") or ("verh.ben.dt.gels.hno-heilkunde 1991"))) or ("overh.born.dt.gel.hno-heilkunde 15.15"))*.