Perhaps you should try some spelling variations:
"internationale d'ete opposition" » "internationale d'envoi opposition" (Expand Search), "internationale contre opposition" (Expand Search), "international de opposition" (Expand Search)
"internationale de l'opposition" » "international de l'opposition" (Expand Search)
"internationale des propositions" » "international des propositions" (Expand Search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"internationale d'ete opposition\") OR (\"internationale de l'opposition\"))) OR (\"internationale des propositions\"))~".
• Removing quotes may allow a broader search: (((( internationale d'ete opposition ) OR ( internationale de l'opposition ))) OR ( internationale des propositions ))~.
• Adding a wildcard symbol may retrieve word variants: (((("internationale d'ete opposition") OR ("internationale de l'opposition"))) OR ("internationale des propositions"))*.