Perhaps you should try some spelling variations:
"internationale contre opposition" » "internationale conferentie opposition" (Expand Search), "internationale de opposition" (Expand Search)
"international d'ete opposition" » "international met opposition" (Expand Search), "international zet opposition" (Expand Search), "internationale de opposition" (Expand Search), "international de l'opposition" (Expand Search)
"internationale des opposition" » "internationale de 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("international d'ete opposition") OR ((("internationale des opposition") OR ((("international de opposition") OR ((((("internationale contre opposition") OR ("internationale politiek opposition"))) OR ("international conference opposition"))))))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"international d'ete opposition\") OR (((\"internationale des opposition\") OR (((\"international de opposition\") OR (((((\"internationale contre opposition\") OR (\"internationale politiek opposition\"))) OR (\"international conference opposition\"))))))))".
• Removing quotes may allow a broader search: (( international d'ete opposition ) OR ((( internationale des opposition ) OR ((( international de opposition ) OR ((((( internationale contre opposition ) OR ( internationale politiek opposition ))) OR ( international conference opposition )))))))).
• Adding a wildcard symbol may retrieve word variants: (("international d'ete opposition") OR ((("internationale des opposition") OR ((("international de opposition") OR ((((("internationale contre opposition") OR ("internationale politiek opposition"))) OR ("international conference opposition"))))))))*.