Perhaps you should try some spelling variations:
"methode van bavel / gtt" » "methode von bavel / gtt", "methode vii bavel / gtt", "methode vom bavel / gtt", "methode 2an bavel / gtt", "methode 4an bavel / gtt", "methode 1an bavel / gtt"
"methode vi bavel / gtt" » "methoden vi bavel / gtt", "methode von bavel / gtt", "methode 2 bavel / gtt", "methode 2i bavel / gtt", "methode 4i bavel / gtt", "methode 1i bavel / gtt", "methode vi based / gtt", "methode vi baked / gtt", "methode vi bases / gtt"
"methode v bavel / gtt" » "methode 2 bavel / gtt", "methode 4 bavel / gtt", "methode 1 bavel / gtt", "methode v bavula / gtt"
"methode 3 bavel / gtt" » "methode 2 bavel / gtt", "methode 3 basel / 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 van bavel / gtt\") OR (((((\"methode v bavel / gtt\") OR (\"methode 3 bavel / gtt\"))) OR (\"methode vi bavel / gtt\"))))".
• Removing quotes may allow a broader search: (( methode van bavel / gtt ) OR ((((( methode v bavel / gtt ) OR ( methode 3 bavel / gtt ))) OR ( methode vi bavel / gtt )))).
• Adding a wildcard symbol may retrieve word variants: (("methode van bavel / gtt") OR ((((("methode v bavel / gtt") OR ("methode 3 bavel / gtt"))) OR ("methode vi bavel / gtt"))))*.