Perhaps you should try some spelling variations:
"ambulanter" » "ambulanten", "ambulanzer", "ambulantener", "ambulanceer", "ambulantenr"
"ambulantennr" » "ambulanten", "ambulantes", "ambulanzen", "ambulanzennr", "ambulantenennr", "ambulanceennr", "ambulantennnr"
"ambulant" » "ambulanz", "ambulanten", "ambulance"
"ambulante" » "ambulanze", "ambulantene", "ambulancee", "ambulanten"

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: (("ambulanter" OR ("ambulantennr" OR "ambulant")) OR "ambulante").
• Removing quotes may allow a broader search: (( ambulanter or ( ambulantennr or ambulant )) or ambulante ).
• Adding a wildcard symbol may retrieve word variants: (("ambulanter" or ("ambulantennr" or "ambulant")) or "ambulante")*.