Perhaps you should try some spelling variations:
"Obras completas Melanie Klein" » "Obras complet Melanie Klein" (Expand Search), "Obras complets Melanie Klein" (Expand Search)
"Obras complets Melanie Klein" » "Obras complet Melanie Klein" (Expand Search)
"obras complets melanie klein" » "obras complet melanie klein" (Expand Search)
"obras completa melanie klein" » "obras complet melanie klein" (Expand Search)

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: (((((("Obras completas Melanie Klein") OR ("Obras complets Melanie Klein"))) OR ("obras complets melanie klein"))) OR ("obras completa melanie klein"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"Obras completas Melanie Klein\") OR (\"Obras complets Melanie Klein\"))) OR (\"obras complets melanie klein\"))) OR (\"obras completa melanie klein\"))".
• Removing quotes may allow a broader search: (((((( Obras completas Melanie Klein ) OR ( Obras complets Melanie Klein ))) OR ( obras complets melanie klein ))) OR ( obras completa melanie klein )).
• Adding a wildcard symbol may retrieve word variants: (((((("Obras completas Melanie Klein") OR ("Obras complets Melanie Klein"))) OR ("obras complets melanie klein"))) OR ("obras completa melanie klein"))*.