Perhaps you should try some spelling variations:
"methoden von bavel / gtt" » "methode von bavel / gtt", "methoden 1 bavel / gtt", "methoden 2 bavel / gtt", "methoden van bavel / gtt", "methoden von gavel / gtt", "methoden von havel / gtt"
"methoden von babel / gtt" » "methode von babel / gtt", "methoden 1 babel / gtt", "methoden 2 babel / gtt", "methoden von abel / gtt", "methoden von baden / gtt", "methoden von baer / gtt"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"methoden von bavel / gtt\") OR (\"methoden von babel / gtt\"))*".
• Removing quotes may allow a broader search: (( methoden von bavel / gtt ) OR ( methoden von babel / gtt ))*.