Perhaps you should try some spelling variations:
"methode vi baked / gtt" » "methoden vi baked / gtt", "methode von baked / gtt", "methode 2 baked / gtt", "methode vi based / gtt", "methode _ baked / gtt", "methode 15 baked / gtt"
"methode si based / gtt" » "methode so based / gtt", "methode sdl based / gtt", "methode 2 based / gtt", "methode ai based / gtt", "methode ni based / gtt", "methode mri based / 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 vi baked / gtt") OR ("methode si based / gtt")).
• Removing quotes may allow a broader search: (( methode vi baked / gtt ) or ( methode si based / gtt )).
• Adding a wildcard symbol may retrieve word variants: (("methode vi baked / gtt") or ("methode si based / gtt"))*.