Perhaps you should try some spelling variations:
"methode van bavel / gtt" » "methode von bavel / gtt", "methode vi bavel / gtt", "methode vom bavel / gtt", "methode vian bavel / gtt", "methode 2an bavel / gtt", "methode 3an 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 2ii bavel / gtt", "methode 3ii bavel / gtt"
"methode 3ii bavel / gtt" » "methode 3 bavel / gtt", "methode 3.1 bavel / gtt", "methode 3.4 bavel / gtt"
"methode 4i bavel / gtt" » "methode 4 bavel / gtt", "methode 42 bavel / gtt", "methode 47 bavel / gtt"
"methode v bavel / gtt" » "methode vi bavel / gtt", "methode 2 bavel / gtt", "methode 3 bavel / gtt", "methode v bavula / 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 4i bavel / gtt"))) OR ((("methode vii bavel / gtt") OR ("methode 3ii 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 4i bavel / gtt\"))) or (((\"methode vii bavel / gtt\") OR (\"methode 3ii bavel / gtt\"))))) or (\"methode v bavel / gtt\"))".
• Removing quotes may allow a broader search: (((((( methode van bavel / gtt ) or ( methode 4i bavel / gtt ))) or ((( methode vii bavel / gtt ) OR ( methode 3ii bavel / gtt ))))) or ( methode v bavel / gtt )).
• Adding a wildcard symbol may retrieve word variants: (((((("methode van bavel / gtt") or ("methode 4i bavel / gtt"))) or ((("methode vii bavel / gtt") OR ("methode 3ii bavel / gtt"))))) or ("methode v bavel / gtt"))*.