Perhaps you should try some spelling variations:
"coleccion cronica la memoria." » "coleccion critica la memoria.", "infeccion cronica la memoria.", "coleccion juridica la memoria.", "coleccion cronicas la memoria.", "coleccion cronica a memoria.", "coleccion cronica lmc memoria."
"coleccion cronica y OR cronicas y memoria." » "coleccion cronica y OR cronicas de memoria.", "coleccion cronica de OR cronicas y memoria."

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: (("coleccion ((cronica y) OR (cronicas y)) memoria.") or ("coleccion cronica la memoria."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("coleccion ((cronica y) OR (cronicas y)) memoria.") OR ("coleccion cronica la memoria.")).
• Removing quotes may allow a broader search: (( coleccion ((cronica y) OR (cronicas y)) memoria. ) or ( coleccion cronica la memoria. )).
• Adding a wildcard symbol may retrieve word variants: (("coleccion ((cronica y) OR (cronicas y)) memoria.") or ("coleccion cronica la memoria."))*.