Perhaps you should try some spelling variations:
"Encyclopédie industrielle und commerciale" » "Encyclopédie industrial un commerciale", "Encyclopédie industrielles et commerciale", "Encyclopédie industrial una commerciale"
"Encyclopédie industrial en commercialize" » "Encyclopédie industria en commercialize", "Encyclopédie industrial en commercial", "Encyclopédie industrial en comercializan", "Encyclopédie industrial en comercializar"

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