Perhaps you should try some spelling variations:
"las resistencia social. tercera decada." » "las asistencia social. tercera decada.", "las resistencia al. tercera decada.", "las resistencia civil. tercera decada.", "las resistencias social. tercera decada.", "la resistencia social. tercera decada.", "a resistencia social. tercera decada."
"las fincas sociales. tercera decada." » "las ciencas sociales. tercera decada.", "las ciencias sociales. tercera decada.", "las cienicas sociales. tercera decada.", "la finca sociales. tercera decada.", "los incas sociales. tercera decada.", "las fibras sociales. tercera decada."

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• Performing a fuzzy search may retrieve terms with similar spellings: (("las fincas sociales. tercera decada.") or ("las resistencia social. tercera decada."))~.
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• Adding a wildcard symbol may retrieve word variants: (("las fincas sociales. tercera decada.") or ("las resistencia social. tercera decada."))*.