Perhaps you should try some spelling variations:
"werkes von siemens ringe" » "werkes von siemens inge" (Expand Search), "werkes von siemens linge" (Expand Search)
"werkes von siemens ringee" » "werkes von siemens ingee" (Expand Search), "werkes von siemens lingee" (Expand Search)
"wirken von siemens ging" » "wirken von siemens ing" (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("werkes von siemens ringe") OR ("werkes von siemens ringee"))) OR ("wirken von siemens ging"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"werkes von siemens ringe\") OR (\"werkes von siemens ringee\"))) OR (\"wirken von siemens ging\"))*".
• Removing quotes may allow a broader search: (((( werkes von siemens ringe ) OR ( werkes von siemens ringee ))) OR ( wirken von siemens ging ))*.