Perhaps you should try some spelling variations:
"en eerste internationale du festival" » "en de internationale du festival" (Expand Search), "en eerste internationale des festival" (Expand Search), "en eerste international de festival" (Expand Search), "en eerste internationale dour festival" (Expand Search), "en eerste internationale het festival" (Expand Search), "een eerste internationale du festival" (Expand Search), "het eerste internationale du festival" (Expand Search), "de eerste internationale du festival" (Expand Search)
"het _ internationale doel festival" » "het _ internationale des festival" (Expand Search), "het _ internationale de festival" (Expand Search), "het _ international de festival" (Expand Search), "het _ internationale dour festival" (Expand Search), "het _ internationale het festival" (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: (("het _ internationale doel festival") OR ("en eerste internationale du festival"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"het _ internationale doel festival\") OR (\"en eerste internationale du festival\"))".
• Removing quotes may allow a broader search: (( het _ internationale doel festival ) OR ( en eerste internationale du festival )).
• Adding a wildcard symbol may retrieve word variants: (("het _ internationale doel festival") OR ("en eerste internationale du festival"))*.