Perhaps you should try some spelling variations:
heilkunde 10 » heilkunde 1, heilkunde 11, heilkunde 18
heilkunde 16 » heilkunde 6, heilkunde 1, heilkunde 11
ver.bern.dt.geld.hno- » ever.bern.dt.geld.hno-, vier.bern.dt.geld.hno-, ver.been.dt.geld.hno-, ver.ben.dt.geld.hno-, ver.bern.dt.gold.hno-, ver.bern.dt.gel.hno-
verh.born.dt.gels.hno-heilkunde » everh.born.dt.gels.hno-heilkunde, vierh.born.dt.gels.hno-heilkunde, vers.born.dt.gels.hno-heilkunde, verb.born.dt.gels.hno-heilkunde, vera.born.dt.gels.hno-heilkunde, verh.born.dt.gel.hno-heilkunde, verh.born.dt.gets.hno-heilkunde
very.born.dt.gels.hno-heilkunde » every.born.dt.gels.hno-heilkunde, viery.born.dt.gels.hno-heilkunde, very.born.dt.gel.hno-heilkunde, very.born.dt.gets.hno-heilkunde

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.geld.hno-((heilkunde 10) OR (heilkunde 16)) ) OR (( verh.born.dt.gels.hno-heilkunde OR very.born.dt.gels.hno-heilkunde) 1991 )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ver.bern.dt.geld.hno-((heilkunde 10) OR (heilkunde 16)) ) or (( verh.born.dt.gels.hno-heilkunde or very.born.dt.gels.hno-heilkunde) 1991 ))".
• Adding a wildcard symbol may retrieve word variants: (( ver.bern.dt.geld.hno-((heilkunde 10) OR (heilkunde 16)) ) or (( verh.born.dt.gels.hno-heilkunde or very.born.dt.gels.hno-heilkunde) 1991 ))*.