Perhaps you should try some spelling variations:
"Problèmes d’histoire laws religions" » "Problèmes d’histoire laws religion", "Problèmes d’histoire laws regulations"
"Problèmes d’histoire law religion" » "Problèmes d’histoire laws religion", "Problèmes d’histoire law religious", "Problèmes d’histoire new religion"

Try widening your search to All Fields.

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"Problèmes d’histoire laws religions\") OR (\"Problèmes d’histoire law religion\"))".
• Removing quotes may allow a broader search: (( Problèmes d’histoire laws religions ) OR ( Problèmes d’histoire law religion )).
• Adding a wildcard symbol may retrieve word variants: (("Problèmes d’histoire laws religions") OR ("Problèmes d’histoire law religion"))*.