Perhaps you should try some spelling variations:
"methods vii bavel / gtt" » "methods vi bavel / gtt", "methods via bavel / gtt", "methods v bavel / gtt", "methods vii bases / gtt"
"methode van bavel / gtt" » "methode vii bavel / gtt", "methode vom bavel / gtt", "methode viii bavel / gtt", "methode 2an bavel / gtt", "methode 3an bavel / gtt", "methode 4an bavel / gtt"
"methode vi bases / gtt" » "methoden vi bases / gtt", "methode 2 bases / gtt", "methode 3 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"
"methode von bavel / gtt" » "methode von babel / gtt", "methode von gavel / gtt", "methode von havel / gtt", "methode 2on bavel / gtt", "methode 3on bavel / gtt", "methode 4on bavel / 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 (\"methode von bavel / gtt\"))))) OR (\"methods vii bavel / gtt\"))) OR (\"methode v bavel / gtt\"))".
• Removing quotes may allow a broader search: (((((( methode van bavel / gtt ) OR ((( methode vi bases / gtt ) OR ( methode von bavel / gtt ))))) OR ( methods vii 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 ("methode von bavel / gtt"))))) OR ("methods vii bavel / gtt"))) OR ("methode v bavel / gtt"))*.