Perhaps you should try some spelling variations:
"methode van bavel / gtt" » "methode von bavel / gtt", "methode v bavel / gtt", "methode viii bavel / gtt"
"methode vom bavel / gtt" » "methoden vom bavel / gtt", "methode von bavel / gtt", "methode v bavel / gtt", "methode vom braven / gtt", "methode vom bail / gtt", "methode vom bauen / gtt"
"methode vii bavel / gtt" » "methoden vii bavel / gtt", "methods vii bavel / gtt", "method vii bavel / gtt", "methode voni bavel / gtt", "methode 2i bavel / gtt", "methode vii bases / gtt"
"methode vi bavel / gtt" » "methoden vi bavel / gtt", "methode von bavel / gtt", "methode 2 bavel / gtt", "methode vi based / gtt", "methode vi baked / gtt", "methode vi bases / gtt"
"methode 1 bavel / gtt" » "methode 2 bavel / gtt", "methode 3 bavel / gtt", "methode 5 bavel / gtt", "methode 1 basel / gtt", "methode 1 babel / gtt", "methode 1 bagels / gtt"
"methode 4 bavel / gtt" » "methode 2 bavel / gtt", "methode 3 bavel / gtt"

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: (((((((("methode van bavel / gtt") OR ("methode vom bavel / gtt"))) OR ("methode vii bavel / gtt"))) OR ("methode vi bavel / gtt"))) OR ((("methode 1 bavel / gtt") OR ("methode 4 bavel / gtt"))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((((\"methode van bavel / gtt\") OR (\"methode vom bavel / gtt\"))) or (\"methode vii bavel / gtt\"))) or (\"methode vi bavel / gtt\"))) or (((\"methode 1 bavel / gtt\") or (\"methode 4 bavel / gtt\"))))*".
• Removing quotes may allow a broader search: (((((((( methode van bavel / gtt ) OR ( methode vom bavel / gtt ))) or ( methode vii bavel / gtt ))) or ( methode vi bavel / gtt ))) or ((( methode 1 bavel / gtt ) or ( methode 4 bavel / gtt ))))*.