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