Perhaps you should try some spelling variations:
"internationale contre opposition" » "internationale conferentie opposition" (Expand Search), "internationale de opposition" (Expand Search), "international conference opposition" (Expand Search)
"internationale d'ete opposition" » "internationale de opposition" (Expand Search), "internationale d'envoi opposition" (Expand Search), "international de opposition" (Expand Search), "internationale de l'opposition" (Expand Search)
"internationale des opposition" » "internationale de l'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: (("internationale des opposition") OR ((((("internationale contre opposition") OR ("internationale politiek opposition"))) OR ("internationale d'ete opposition"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"internationale des opposition\") OR (((((\"internationale contre opposition\") OR (\"internationale politiek opposition\"))) OR (\"internationale d'ete opposition\"))))*".
• Removing quotes may allow a broader search: (( internationale des opposition ) OR ((((( internationale contre opposition ) OR ( internationale politiek opposition ))) OR ( internationale d'ete opposition ))))*.