Perhaps you should try some spelling variations:
"werkes von siemens fingo" » "wirken von siemens fingo" (Expand Search), "werkes von siemens ingo" (Expand Search), "werkes von siemens fing" (Expand Search)
"werner von siemens linge" » "weiber von siemens linge" (Expand Search)
"werner von siemens ging" » "weiber von siemens ging" (Expand Search), "werner 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 fingo") OR ("werner von siemens linge"))) OR ("werner von siemens ging"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"werkes von siemens fingo\") OR (\"werner von siemens linge\"))) OR (\"werner von siemens ging\"))".
• Removing quotes may allow a broader search: (((( werkes von siemens fingo ) OR ( werner von siemens linge ))) OR ( werner von siemens ging )).
• Adding a wildcard symbol may retrieve word variants: (((("werkes von siemens fingo") OR ("werner von siemens linge"))) OR ("werner von siemens ging"))*.