Perhaps you should try some spelling variations:
"wirken von siemens ging" » "werkes von siemens ging" (Expand Search), "wirken von siemens gingo" (Expand Search)
"werner von siemens inge" » "weiber von siemens inge" (Expand Search), "werkes von siemens inge" (Expand Search), "werner von siemens ingo" (Expand Search), "werner von siemens ingoe" (Expand Search)
"werner von siemens ing" » "weiber von siemens ing" (Expand Search), "werkes von siemens ing" (Expand Search), "werner von siemens ingo" (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: (("wirken von siemens ging") OR ((("werner von siemens inge") OR ("werner von siemens ing"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"wirken von siemens ging\") OR (((\"werner von siemens inge\") OR (\"werner von siemens ing\"))))*".
• Removing quotes may allow a broader search: (( wirken von siemens ging ) OR ((( werner von siemens inge ) OR ( werner von siemens ing ))))*.