Perhaps you should try some spelling variations:
"struktur methodik leitfaden" » "struktur methodischer leitfaden", "strukturen methoden leitfaden", "sektor methodik leitfaden"
"struktur technik leitfaden" » "struktur technische leitfaden", "kultur technik leitfaden"
"trubner technik leitfaden" » "uber technik leitfaden", "trigger technik leitfaden"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"trubner technik leitfaden\") OR (\"struktur technik leitfaden\"))) OR (\"struktur methodik leitfaden\"))".
• Removing quotes may allow a broader search: (((( trubner technik leitfaden ) OR ( struktur technik leitfaden ))) OR ( struktur methodik leitfaden )).
• Adding a wildcard symbol may retrieve word variants: (((("trubner technik leitfaden") OR ("struktur technik leitfaden"))) OR ("struktur methodik leitfaden"))*.