Perhaps you should try some spelling variations:
"etude du centre agiles developpement" » "etude du centre web developpement", "etude du centered agile developpement", "etude du centres gilles developpement", "etude du centre agents developpement", "etude a centre agiles developpement", "etude de centre agiles developpement", "l'etude du centre agiles developpement", "etudes de centre agiles developpement"
"etude du centre de developpement" » "etude du centre web developpement", "etude a centre de developpement", "etude du centre _ developpement", "etude de centre de developpement", "l'etude du centre de developpement", "etudes de centre de developpement"
"etude _ centre de developpement" » "etude _ centre web developpement", "etude _ centre _ developpement"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("etude du centre de developpement") OR ("etude du centre agiles developpement"))) OR ("etude _ centre de developpement")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"etude du centre de developpement\") OR (\"etude du centre agiles developpement\"))) or (\"etude _ centre de developpement\"))".
• Removing quotes may allow a broader search: (((( etude du centre de developpement ) OR ( etude du centre agiles developpement ))) or ( etude _ centre de developpement )).
• Adding a wildcard symbol may retrieve word variants: (((("etude du centre de developpement") OR ("etude du centre agiles developpement"))) or ("etude _ centre de developpement"))*.