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