Perhaps you should try some spelling variations:
"digitalia book collecting: por radiacion." » "digitalia book collectors: por radiacion.", "digitalia book collecting: con radiacion.", "digitalia book collecting: por dedicacion.", "digitalia book collecting: la radiacion."
"digitalia ebook collection: lom ediciones." » "digitalia ebooks collection: lom ediciones."

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("digitalia ebook collection: lom ediciones.") or ("digitalia book collecting: por radiacion."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("digitalia ebook collection: lom ediciones.") OR ("digitalia book collecting: por radiacion."))*.
• Removing quotes may allow a broader search: (( digitalia ebook collection: lom ediciones. ) or ( digitalia book collecting: por radiacion. ))*.