Perhaps you should try some spelling variations:
"vers.been.dt.gel.hno-heilkunde 15.15" » "vers.been.dt.gel.hno-heilkunde 5.1", "verse.been.dt.gel.hno-heilkunde 15.15", "verso.been.dt.gel.hno-heilkunde 15.15", "very.been.dt.gel.hno-heilkunde 15.15"
"verh.bern.dt.geld.hno-heilkunde 1991" » "verh.bern.dt.geld.hno-heilkunde 1", "verh.bern.dt.geld.hno-heilkunde 10", "verh.bern.dt.geld.hno-heilkunde 16", "very.bern.dt.geld.hno-heilkunde 1991", "ver.bern.dt.geld.hno-heilkunde 1991", "verb.bern.dt.geld.hno-heilkunde 1991", "verh.ben.dt.geld.hno-heilkunde 1991", "verh.bern.dt.gold.hno-heilkunde 1991"
"vers.born.dt.gel.hno-heilkunde 11" » "vers.born.dt.gel.hno-heilkunde 1", "vers.born.dt.gel.hno-heilkunde 10", "vers.born.dt.gel.hno-heilkunde 16", "verse.born.dt.gel.hno-heilkunde 11", "verso.born.dt.gel.hno-heilkunde 11", "very.born.dt.gel.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: (("verh.bern.dt.geld.hno-heilkunde 1991") OR ((("vers.born.dt.gel.hno-heilkunde 11") OR ("vers.been.dt.gel.hno-heilkunde 15.15")))).
• Removing quotes may allow a broader search: (( verh.bern.dt.geld.hno-heilkunde 1991 ) or ((( vers.born.dt.gel.hno-heilkunde 11 ) or ( vers.been.dt.gel.hno-heilkunde 15.15 )))).
• Adding a wildcard symbol may retrieve word variants: (("verh.bern.dt.geld.hno-heilkunde 1991") or ((("vers.born.dt.gel.hno-heilkunde 11") or ("vers.been.dt.gel.hno-heilkunde 15.15"))))*.