Perhaps you should try some spelling variations:
"librero{acute}ias." » "libreros{acute}ias.", "libreria{acute}ias.", "librero{acute}dias.", "librero{acute}vias.", "llibrero{acute}ias.", "libreo{acute}ias.", "libreso{acute}ias."
"librero{acute}diaz." » "libreros{acute}diaz.", "libreria{acute}diaz.", "llibrero{acute}diaz.", "libreo{acute}diaz.", "libreso{acute}diaz."
"librer{acute}dios." » "llibrer{acute}dios.", "libre{acute}dios.", "libres{acute}dios.", "librer{acute}rios."
"librer{acute}dos." » "llibrer{acute}dos.", "libre{acute}dos.", "libres{acute}dos."

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: (("librero{acute}ias." or "librero{acute}diaz.") or ("librer{acute}dios." or "librer{acute}dos."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("librero{acute}ias." OR "librero{acute}diaz.") OR ("librer{acute}dios." OR "librer{acute}dos.")).
• Removing quotes may allow a broader search: (( librero{acute}ias. or librero{acute}diaz. ) or ( librer{acute}dios. or librer{acute}dos. )).
• Adding a wildcard symbol may retrieve word variants: (("librero{acute}ias." or "librero{acute}diaz.") or ("librer{acute}dios." or "librer{acute}dos."))*.