Perhaps you should try some spelling variations:
"rehabilitation using ederhof" » "rehabilitation training ederhof", "rehabilitation following ederhof"
"rehabilitation unter meyerhof" » "rehabilitation united meyerhof", "rehabilitation center meyerhof", "rehabilitation after meyerhof", "rehabilitation unter meyerson"
"rehabilitation und ederhof" » "rehabilitation und federholz"

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: (((("rehabilitation using ederhof") OR ("rehabilitation und ederhof"))) OR ("rehabilitation unter meyerhof")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"rehabilitation using ederhof\") OR (\"rehabilitation und ederhof\"))) or (\"rehabilitation unter meyerhof\"))".
• Removing quotes may allow a broader search: (((( rehabilitation using ederhof ) OR ( rehabilitation und ederhof ))) or ( rehabilitation unter meyerhof )).
• Adding a wildcard symbol may retrieve word variants: (((("rehabilitation using ederhof") OR ("rehabilitation und ederhof"))) or ("rehabilitation unter meyerhof"))*.