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