Perhaps you should try some spelling variations:
"digitalia ebook collecting: con radiacion." » "digitalia book collecting: con radiacion.", "digitalia ebook collection: con radiacion.", "digitalia book collectors: con radiacion.", "digitalia ebook collecting: con adicion.", "digitalia ebook collecting: con mediacion.", "digitalia ebook collecting: por radiacion."
"digitalia art collections: lom edicion." » "digitalia art collectors: lom edicion.", "digitalia _ collections: lom edicion.", "digital art collections: lom edicion.", "digitalia art collections: lom ediciones.", "digitalia art collections: la edicion.", "digitalia art collections: 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 art collections: lom edicion.") or ("digitalia ebook collecting: con radiacion."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("digitalia art collections: lom edicion.") OR ("digitalia ebook collecting: con radiacion.")).
• Removing quotes may allow a broader search: (( digitalia art collections: lom edicion. ) or ( digitalia ebook collecting: con radiacion. )).
• Adding a wildcard symbol may retrieve word variants: (("digitalia art collections: lom edicion.") or ("digitalia ebook collecting: con radiacion."))*.