Perhaps you should try some spelling variations:
"methode viii borel / gtt" » "methode iii borel / gtt", "methods viii borel / gtt", "methode vi borel / gtt", "methoden viii borel / gtt", "method viii borel / gtt", "methode xiii borel / gtt", "methode ii borel / gtt", "methode viiii borel / gtt", "methode 3iii borel / gtt", "methode 4iii borel / gtt"
"methode van bavel / gtt" » "methode von bavel / gtt", "methode vi bavel / gtt", "methode vian bavel / gtt", "methode 3an bavel / gtt", "methode 4an bavel / gtt"
"methode vom bavel / gtt" » "methoden vom bavel / gtt", "methode von bavel / gtt", "methode vi bavel / gtt", "methode vom braven / gtt", "methode vom bail / gtt", "methode vom bauen / gtt", "methode viom bavel / gtt", "methode 3om bavel / gtt", "methode 4om bavel / gtt"
"methode vii bavel / gtt" » "methoden vii bavel / gtt", "methods vii bavel / gtt", "method vii bavel / gtt", "methode vii bases / gtt", "methode viii bavel / gtt", "methode 3ii bavel / gtt", "methode 4ii bavel / gtt"
"methode v bavel / gtt" » "methode vi bavel / gtt", "methode 3 bavel / gtt", "methode 4 bavel / gtt", "methode v bavula / gtt"
"methode 2 bavel / gtt" » "methode 2 babel / gtt"

Try widening your search to All Fields.

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 viii borel / gtt"))) OR ("methode 2 bavel / gtt"))) OR ("methode vii bavel / gtt"))) OR ("methode v 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 viii borel / gtt\"))) or (\"methode 2 bavel / gtt\"))) or (\"methode vii bavel / gtt\"))) or (\"methode v bavel / gtt\"))".
• Removing quotes may allow a broader search: (((((((((( methode van bavel / gtt ) OR ( methode vom bavel / gtt ))) or ( methode viii borel / gtt ))) or ( methode 2 bavel / gtt ))) or ( methode vii bavel / gtt ))) or ( methode v bavel / gtt )).
• Adding a wildcard symbol may retrieve word variants: (((((((((("methode van bavel / gtt") OR ("methode vom bavel / gtt"))) or ("methode viii borel / gtt"))) or ("methode 2 bavel / gtt"))) or ("methode vii bavel / gtt"))) or ("methode v bavel / gtt"))*.