Perhaps you should try some spelling variations:
"internationale conferentie opposition" » "international conference opposition" (Expand Search)
"internationale d'envoi opposition" » "internationale de opposition" (Expand Search), "internationale design opposition" (Expand Search), "internationale d'ete opposition" (Expand Search)
"internationales de l'opposition" » "internationale de l'opposition" (Expand Search), "internationale dag l'opposition" (Expand Search), "international a l'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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"international de opposition\") OR (((\"internationale des opposition\") OR (((((\"internationales de l'opposition\") OR (\"internationale conferentie opposition\"))) OR (\"internationale d'envoi opposition\"))))))~".
• Removing quotes may allow a broader search: (( international de opposition ) OR ((( internationale des opposition ) OR ((((( internationales de l'opposition ) OR ( internationale conferentie opposition ))) OR ( internationale d'envoi opposition ))))))~.
• Adding a wildcard symbol may retrieve word variants: (("international de opposition") OR ((("internationale des opposition") OR ((((("internationales de l'opposition") OR ("internationale conferentie opposition"))) OR ("internationale d'envoi opposition"))))))*.