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 dag opposition" » "international de opposition" (Expand Search), "international a opposition" (Expand Search), "internationale d'ete opposition" (Expand Search)
"international des opposition" » "international de opposition" (Expand Search), "international 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("international des opposition") OR ("internationale des propositions"))) OR ((((("internationale dag opposition") OR ("internationale contre opposition"))) OR ("internationale de l'opposition"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"international des opposition\") OR (\"internationale des propositions\"))) OR (((((\"internationale dag opposition\") OR (\"internationale contre opposition\"))) OR (\"internationale de l'opposition\"))))".
• Removing quotes may allow a broader search: (((( international des opposition ) OR ( internationale des propositions ))) OR ((((( internationale dag opposition ) OR ( internationale contre opposition ))) OR ( internationale de l'opposition )))).
• Adding a wildcard symbol may retrieve word variants: (((("international des opposition") OR ("internationale des propositions"))) OR ((((("internationale dag opposition") OR ("internationale contre opposition"))) OR ("internationale de l'opposition"))))*.