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