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