Perhaps you should try some spelling variations:
"Encyclopédie industrielle und commerciale" » "Encyclopédie industrial un commerciale"
"Encyclopédie industrielles et commercialize" » "Encyclopédie industriales en commercialize", "Encyclopédie industriales y commercialize", "Encyclopédie industriales de commercialize", "Encyclopédie industrielles et commercial", "Encyclopédie industrielles et comercializan", "Encyclopédie industrielles et comercializar"
"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 industrielle und commerciale") OR ("Encyclopédie industrial una commerciale"))) OR ("Encyclopédie industrielles et commercialize"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"Encyclopédie industrielle und commerciale\") OR (\"Encyclopédie industrial una commerciale\"))) OR (\"Encyclopédie industrielles et commercialize\"))".
• Removing quotes may allow a broader search: (((( Encyclopédie industrielle und commerciale ) OR ( Encyclopédie industrial una commerciale ))) OR ( Encyclopédie industrielles et commercialize )).
• Adding a wildcard symbol may retrieve word variants: (((("Encyclopédie industrielle und commerciale") OR ("Encyclopédie industrial una commerciale"))) OR ("Encyclopédie industrielles et commercialize"))*.