Perhaps you should try some spelling variations:
"en de internationale heus festival" » "en de internationale des festival" (Expand Search), "en de internationale de festival" (Expand Search), "en de internationale hulp festival" (Expand Search), "en de internationale het festival" (Expand Search), "en de internationale wheels festival" (Expand Search), "en de internationale blues festival" (Expand Search)
"het _ international dour festival" » "het _ international group festival" (Expand Search), "het _ international de festival" (Expand Search), "het _ international day festival" (Expand Search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"het _ international dour festival\") OR (\"en de internationale heus festival\"))~".
• Removing quotes may allow a broader search: (( het _ international dour festival ) OR ( en de internationale heus festival ))~.
• Adding a wildcard symbol may retrieve word variants: (("het _ international dour festival") OR ("en de internationale heus festival"))*.