Perhaps you should try some spelling variations:
agiles developpement » web developpement
chantiers de » creanciers de, changes de, cahiers de
de politique » de politicas
a centre » a central, a center
_ centre » _ central, _ center

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: chantiers de politique economique ((((a centre) OR (_ centre))) OR (a century)) agiles developpement de l'ocde.
• The words AND, OR and NOT may confuse the search; try adding quotes: "chantiers de politique economique ((((a centre) OR (_ centre))) or (a century)) agiles developpement de l'ocde".
• Adding a wildcard symbol may retrieve word variants: chantiers de politique economique ((((a centre) OR (_ centre))) or (a century)) agiles developpement de l'ocde*.