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