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

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