Perhaps you should try some spelling variations:
"digitalia book collectors: canon edicion." » "digitalia book collecting: canon edicion.", "digitalia book collectors: con edicion.", "digitalia book collectors: carrion edicion.", "digitalia book collectors: faeton edicion."
"digitalia ebook collection: como mediacion." » "digitalia ebook collection: como mediador.", "digitalia ebooks collection: como mediacion."

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("digitalia book collectors: canon edicion.") or ("digitalia ebook collection: como mediacion."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("digitalia book collectors: canon edicion.") OR ("digitalia ebook collection: como mediacion.")).
• Removing quotes may allow a broader search: (( digitalia book collectors: canon edicion. ) or ( digitalia ebook collection: como mediacion. )).
• Adding a wildcard symbol may retrieve word variants: (("digitalia book collectors: canon edicion.") or ("digitalia ebook collection: como mediacion."))*.