Perhaps you should try some spelling variations:
"einer methodik leitfaden" » "einer methodischer leitfaden", "eine methodik leitfaden", "einer methode leitfaden", "der methodik leitfaden"
"struktur technik leitfaden" » "struktur technische leitfaden", "kultur technik leitfaden"

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: (("struktur technik leitfaden") OR ("einer methodik leitfaden")).
• Removing quotes may allow a broader search: (( struktur technik leitfaden ) or ( einer methodik leitfaden )).
• Adding a wildcard symbol may retrieve word variants: (("struktur technik leitfaden") or ("einer methodik leitfaden"))*.