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