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 opposition" » "international des opposition" (Expand Search), "internationale des propositions" (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("international conference opposition") OR ("internationale d'ete opposition"))) OR ((("internationale de l'opposition") OR ("internationale des opposition"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"international conference opposition\") OR (\"internationale d'ete opposition\"))) OR (((\"internationale de l'opposition\") OR (\"internationale des opposition\"))))*".
• Removing quotes may allow a broader search: (((( international conference opposition ) OR ( internationale d'ete opposition ))) OR ((( internationale de l'opposition ) OR ( internationale des opposition ))))*.