Perhaps you should try some spelling variations:
"methode 4an bavel / gtt" » "methode 4 bavel / gtt", "methode 4.2 bavel / gtt", "methode 4.1 bavel / gtt", "methode van bavel / gtt"
"methode vi bavel / gtt" » "methoden vi bavel / gtt", "methode von bavel / gtt", "methode 3 bavel / gtt", "methode 3i bavel / gtt", "methode 4i bavel / gtt", "methode 1i bavel / gtt", "methode van bavel / gtt", "methode vi based / gtt", "methode vi baked / gtt"
"methode v bavel / gtt" » "methode 3 bavel / gtt", "methode 4 bavel / gtt", "methode 1 bavel / gtt", "methode van 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 4an bavel / gtt") OR ((("methode v bavel / gtt") OR ((("methode vi bavel / gtt") OR ("methode 2 bavel / gtt")))))).
• Removing quotes may allow a broader search: (( methode 4an bavel / gtt ) or ((( methode v bavel / gtt ) or ((( methode vi bavel / gtt ) or ( methode 2 bavel / gtt )))))).
• Adding a wildcard symbol may retrieve word variants: (("methode 4an bavel / gtt") or ((("methode v bavel / gtt") or ((("methode vi bavel / gtt") or ("methode 2 bavel / gtt"))))))*.