Perhaps you should try some spelling variations:
"internationale contre opposition" » "internationale conferentie opposition" (Expand Search), "international conference opposition" (Expand Search), "internationale d'ete opposition" (Expand Search)
"internationale des opposition" » "international des opposition" (Expand Search), "internationale d'ete opposition" (Expand Search)
"internationale des propositions" » "international des propositions" (Expand Search)
"internationale de l'opposition" » "international de l'opposition" (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 contre opposition\") OR (((\"internationale des opposition\") OR (\"internationale des propositions\"))))) OR (\"internationale politiek opposition\"))) OR (\"internationale de l'opposition\"))~".
• Removing quotes may allow a broader search: (((((( internationale contre opposition ) OR ((( internationale des opposition ) OR ( internationale des propositions ))))) OR ( internationale politiek opposition ))) OR ( internationale de l'opposition ))~.
• Adding a wildcard symbol may retrieve word variants: (((((("internationale contre opposition") OR ((("internationale des opposition") OR ("internationale des propositions"))))) OR ("internationale politiek opposition"))) OR ("internationale de l'opposition"))*.