Perhaps you should try some spelling variations:
"methode van bavel / gtt" » "methoden van bavel / gtt", "methode van basel / gtt", "methode van pavel / gtt", "methode van babel / gtt"
"methode v bavel / gtt" » "methoden v bavel / gtt", "methode v basel / gtt", "methode v pavel / gtt", "methode v babel / gtt"
"methode vi bavel / gtt" » "methoden vi bavel / gtt", "methode vi basel / gtt", "methode vi pavel / gtt", "methode vi babel / gtt"
"methode 2 bavel / gtt" » "methoden 2 bavel / gtt", "methode 2 basel / gtt", "methode 2 pavel / gtt", "methode 2 babel / 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 v bavel / gtt"))) OR ((("methode vi bavel / gtt") OR ("methode 2 bavel / gtt"))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"methode van bavel / gtt\") OR (\"methode v bavel / gtt\"))) or (((\"methode vi bavel / gtt\") or (\"methode 2 bavel / gtt\"))))*".
• Removing quotes may allow a broader search: (((( methode van bavel / gtt ) OR ( methode v bavel / gtt ))) or ((( methode vi bavel / gtt ) or ( methode 2 bavel / gtt ))))*.