Perhaps you should try some spelling variations:
heilkunde 15.15 » heilkunde 5.1
heilkunde 11 » heilkunde 1, heilkunde 10, heilkunde 16
verh.been.dt.gel.hno- » very.been.dt.gel.hno-, ver.been.dt.gel.hno-, vers.been.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.been.dt.gel.hno-((heilkunde 15.15) OR (heilkunde 11))".
• Adding a wildcard symbol may retrieve word variants: verh.been.dt.gel.hno-((heilkunde 15.15) OR (heilkunde 11))*.