Perhaps you should try some spelling variations:
"Encyclopédie industrielle und commerciale" » "Encyclopédie industrial un commerciale", "Encyclopédie industrielles et commerciale"
"Encyclopédie industrielle und commercialize" » "Encyclopédie industrial un commercialize", "Encyclopédie industrielles et commercialize", "Encyclopédie industrielle und commercial", "Encyclopédie industrielle und comercializan", "Encyclopédie industrielle und 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 industrielle und 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 industrielle und commercialize\"))".
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• Adding a wildcard symbol may retrieve word variants: (((("Encyclopédie industrielle und commerciale") OR ("Encyclopédie industrial una commerciale"))) OR ("Encyclopédie industrielle und commercialize"))*.