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 3an bavel / gtt", "methode 4an bavel / gtt"
"methode vi bases / gtt" » "methoden vi bases / gtt", "methode von bases / gtt", "methode 2 bases / gtt", "methode 2i bases / gtt", "methode 3i bases / gtt", "methode 4i bases / gtt", "methode i bases / gtt", "methode ii bases / gtt", "methode vi based / gtt"
"methods vi bavel / gtt" » "methods v bavel / gtt", "methods 1 bavel / gtt", "methods vi based / gtt", "methods vi baked / gtt", "methods vi baden / gtt"
"methode v bavel / gtt" » "methode 2 bavel / gtt", "methode 3 bavel / gtt", "methode 4 bavel / gtt", "methode v bavula / 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 vi bases / gtt\"))) OR (\"methods vi bavel / gtt\"))) OR (\"methode v bavel / gtt\"))".
• Removing quotes may allow a broader search: (((((( methode van bavel / gtt ) OR ( methode vi bases / gtt ))) OR ( methods vi bavel / gtt ))) OR ( methode v bavel / gtt )).
• Adding a wildcard symbol may retrieve word variants: (((((("methode van bavel / gtt") OR ("methode vi bases / gtt"))) OR ("methods vi bavel / gtt"))) OR ("methode v bavel / gtt"))*.