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