Perhaps you should try some spelling variations:
"geschafte fur poetica" » "geschafte der poetica", "geschafte _ poetica", "geschafte und poetica", "geschafte fur political", "geschafte obra poetica", "geschafte her poetical"
"testhefte zu poetica" » "beihefte zu poetica", "testheft i poetica", "testheft ii poetica", "testhefte la poetica", "testhefte de poetica", "testhefte e poetica"
"geschafte zu poetica" » "geschafte zur poetica", "geschafte _ poetica", "geschafte im 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"

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: (((("leithefte zu poetica") OR ("testhefte zu poetica"))) OR ((("geschafte zu poetica") OR ("geschafte fur poetica")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"leithefte zu poetica\") or (\"testhefte zu poetica\"))) or (((\"geschafte zu poetica\") OR (\"geschafte fur poetica\"))))".
• Removing quotes may allow a broader search: (((( leithefte zu poetica ) or ( testhefte zu poetica ))) or ((( geschafte zu poetica ) OR ( geschafte fur poetica )))).
• Adding a wildcard symbol may retrieve word variants: (((("leithefte zu poetica") or ("testhefte zu poetica"))) or ((("geschafte zu poetica") OR ("geschafte fur poetica"))))*.