Perhaps you should try some spelling variations:
"digitalia ebooks collection: lom edicion." » "digitalia ebook collection: lom edicion.", "digitalia book collecting: lom edicion.", "digitalia ebooks collection: lom ediciones.", "digitalia ebooks collection: la edicion.", "digitalia ebooks collection: con edicion."
"digitalia book collection: con adicion." » "digitalia ebook collection: con adicion.", "digitalia book collecting: con adicion.", "digitalia book collectors: con adicion.", "digitalia book collection: con tradicion.", "digitalia book collection: con edicions.", "digitalia book collection: con medicion."

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 ebooks collection: lom edicion.") or ("digitalia book collection: con adicion."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("digitalia ebooks collection: lom edicion.") OR ("digitalia book collection: con adicion.")).
• Removing quotes may allow a broader search: (( digitalia ebooks collection: lom edicion. ) or ( digitalia book collection: con adicion. )).
• Adding a wildcard symbol may retrieve word variants: (("digitalia ebooks collection: lom edicion.") or ("digitalia book collection: con adicion."))*.