Perhaps you should try some spelling variations:
"documentos de la publica espanola ;" » "documentos de la republica espanola ;", "documentos de la publica espana ;", "documentos de la publicas espana ;", "documento de la publica espanola ;", "documentos de la public espanola ;", "documentos de via publica espanola ;", "documentos de la publicidad espanola ;"
"documentos de la republica espana ;" » "documentos de la republica espanola ;", "documentos de la publica espana ;", "documentos de la republicanos espana ;", "documento de la republica espana ;"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("documentos de la publica espanola ;") or ("documentos de la republica espana ;"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("documentos de la publica espanola ;") OR ("documentos de la republica espana ;")).
• Removing quotes may allow a broader search: (( documentos de la publica espanola ; ) or ( documentos de la republica espana ; )).
• Adding a wildcard symbol may retrieve word variants: (("documentos de la publica espanola ;") or ("documentos de la republica espana ;"))*.