Perhaps you should try some spelling variations:
"Etudes de joint international" » "Etudes de 21st international", "Etudes die joint international", "Etudes he joint international", "Etudes one joint international"
"Etudes de 1st international" » "Etudes de first international", "Etudes me 1st international", "Etudes de 1sten international", "Etudes made 1st international"

Try widening your search to All Fields.

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• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"Etudes de joint international\") OR (\"Etudes de 1st international\"))".
• Removing quotes may allow a broader search: (( Etudes de joint international ) OR ( Etudes de 1st international )).
• Adding a wildcard symbol may retrieve word variants: (("Etudes de joint international") OR ("Etudes de 1st international"))*.