Perhaps you should try some spelling variations:
"digitalia book collectors: ruiz editores." » "digitalia book collecting: ruiz editores.", "digitalia ebook collection: ruiz editores.", "digitalia ebook collectors: ruiz editores.", "digitalia book collectors: ril editores.", "digitalia book collectors: ruiz editor.", "digitalia book collectors: xxi editores."
"digitalia book collection: ril editor." » "digitalia ebook collection: ril editor.", "digitalia book collecting: ril editor.", "digitalia coin collections: ril editor.", "digitalia book collection: ril editores.", "digitalia book collection: ruiz editor.", "digitalia book collection: del editor."

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