Perhaps you should try some spelling variations:
"verteilte systems vii" » "verteilten systems vii", "verteilter systeme vii", "verteilten systeme vii", "verteilte systems via", "verteilte systems vi", "verteilte systems v"
"verteilte systeme vision" » "verteilte systems vision", "verteilte system vision", "verteilte systemic vision"

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: (("verteilte systeme vision") OR ("verteilte systems vii"))*.
• Removing quotes may allow a broader search: (( verteilte systeme vision ) or ( verteilte systems vii ))*.