Perhaps you should try some spelling variations:
heilkunde 15.15 » heilkunde 11
heilkunde 5.1 » heilkunde 1, heilkunde 11, heilkunde 31
verh.born.dt.gel.hno- » very.born.dt.gel.hno-, ver.born.dt.gel.hno-, vers.born.dt.gel.hno-

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "verh.born.dt.gel.hno-((heilkunde 5.1) OR (heilkunde 15.15))".
• Adding a wildcard symbol may retrieve word variants: verh.born.dt.gel.hno-((heilkunde 5.1) OR (heilkunde 15.15))*.