Perhaps you should try some spelling variations:
"johannes c beethoven" » "johannes _ beethoven", "johannes b beethoven", "johannes de beethoven"
"johannes a beethoven" » "johannes _ beethoven", "johannes b beethoven", "johannes van beethoven", "johannes f beethoven", "johannes h beethoven"

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: (("johannes a beethoven") OR ("johannes c beethoven")).
• Removing quotes may allow a broader search: (( johannes a beethoven ) or ( johannes c beethoven )).
• Adding a wildcard symbol may retrieve word variants: (("johannes a beethoven") or ("johannes c beethoven"))*.