Perhaps you should try some spelling variations:
"Encyclopédie industrielle et comerciale" » "Encyclopédie industrielles et comerciale", "Encyclopédie industrielle und comerciale", "Encyclopédie industrielle y comercial", "Encyclopédie industrielle y comerciales", "Encyclopédie industrielle lei comercial"
"Encyclopédie industriales y commerciale" » "Encyclopédie industrial y commerciale", "Encyclopédie industriales y comercial", "Encyclopédie industriales y comerciales", "Encyclopédie industriales y comerciale"
"Encyclopédie industriales _ commercial" » "Encyclopédie industriales _ comercial"

Try widening your search to All Fields.

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