Perhaps you should try some spelling variations:
heilkunde 15.15 » heilkunde 11
heilkunde 5.1 » heilkunde 1, heilkunde 11, heilkunde 31
verh.born.dt.ges.hno-heilkunde » ver.born.dt.ges.hno-heilkunde, vers.born.dt.ges.hno-heilkunde, verb.born.dt.ges.hno-heilkunde, verh.born.dt.gets.hno-heilkunde, verh.born.dt.gels.hno-heilkunde, verh.born.dt.gems.hno-heilkunde
verh.born.dt.gem.hno- » ver.born.dt.gem.hno-, vers.born.dt.gem.hno-, verb.born.dt.gem.hno-, verh.born.dt.germ.hno-
very.born.dt.ges.hno-heilkunde » very.born.dt.gets.hno-heilkunde, very.born.dt.gels.hno-heilkunde, very.born.dt.gems.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: (( (verh.born.dt.ges.hno-heilkunde OR very.born.dt.ges.hno-heilkunde) 15.15 ) OR ( verh.born.dt.gem.hno-((heilkunde 5.1) OR (heilkunde 15.15)) )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( (verh.born.dt.ges.hno-heilkunde or very.born.dt.ges.hno-heilkunde) 15.15 ) or ( verh.born.dt.gem.hno-((heilkunde 5.1) OR (heilkunde 15.15)) ))".
• Adding a wildcard symbol may retrieve word variants: (( (verh.born.dt.ges.hno-heilkunde or very.born.dt.ges.hno-heilkunde) 15.15 ) or ( verh.born.dt.gem.hno-((heilkunde 5.1) OR (heilkunde 15.15)) ))*.