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