Perhaps you should try some spelling variations:
"geschafte zu poetica" » "geschafte zur poetica", "geschafte fur poetica", "geschafte _ poetica", "geschafte la poetica", "geschafte de poetica", "geschafte e poetica"
"leithefte zu poetica" » "leithefte la poetica", "leithefte de poetica", "leithefte e poetica", "beihefte zu poetica", "lesehefte zu poetica", "testhefte zu poetica"

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: (("leithefte zu poetica") OR ("geschafte zu poetica")).
• Removing quotes may allow a broader search: (( leithefte zu poetica ) or ( geschafte zu poetica )).
• Adding a wildcard symbol may retrieve word variants: (("leithefte zu poetica") or ("geschafte zu poetica"))*.