Perhaps you should try some spelling variations:
"methoden vi bavel / gtt" » "methoden v bavel / gtt", "methoden von bavel / gtt", "methoden 1 bavel / gtt", "methoden van bavel / gtt", "methoden vi based / gtt", "methoden vi baked / gtt"
"methode vi bavel / gtt" » "methode von bavel / gtt", "methode 2 bavel / gtt", "methode 3 bavel / gtt", "methode van bavel / gtt", "methode vi based / gtt", "methode vi baked / 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: "((\"methode vi bavel / gtt\") OR (\"methoden vi bavel / gtt\"))".
• Removing quotes may allow a broader search: (( methode vi bavel / gtt ) OR ( methoden vi bavel / gtt )).
• Adding a wildcard symbol may retrieve word variants: (("methode vi bavel / gtt") OR ("methoden vi bavel / gtt"))*.