Perhaps you should try some spelling variations:
"Encyclopédie industriales y commerciale" » "Encyclopédie industrial y commerciale", "Encyclopédie industriales y comercial", "Encyclopédie industriales _ commercial", "Encyclopédie industriales y comerciales"
"Encyclopédie industrial una commerciale" » "Encyclopédie industrial un commerciale", "Encyclopédie industrial en commerciale", "Encyclopédie industrial a commerciale"

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• Performing a fuzzy search may retrieve terms with similar spellings: (("Encyclopédie industriales y commerciale") OR ("Encyclopédie industrial una commerciale"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"Encyclopédie industriales y commerciale\") OR (\"Encyclopédie industrial una commerciale\"))".
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• Adding a wildcard symbol may retrieve word variants: (("Encyclopédie industriales y commerciale") OR ("Encyclopédie industrial una commerciale"))*.