Perhaps you should try some spelling variations:
"digitalia ebooks collection: las adicciones." » "digitalia ebook collection: las adicciones.", "digitalia book collecting: las adicciones.", "digitalia ebooks collection: las acciones.", "digitalia ebooks collection: las traducciones.", "digitalia ebooks collection: las tradiciones."
"digitalia book collection: lom edicion." » "digitalia ebook collection: lom edicion.", "digitalia book collecting: lom edicion.", "digitalia book collectors: lom edicion.", "digitalia book collection: lom ediciones.", "digitalia book collection: la edicion.", "digitalia book collection: con edicion."

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