Perhaps you should try some spelling variations:
"en eerste internationale blues festival" » "en eerste internationale des festival" (Expand Search), "en eerste internationale belge festival" (Expand Search), "en eerste internationale de festival" (Expand Search), "een eerste internationale blues festival" (Expand Search), "het eerste internationale blues festival" (Expand Search), "de eerste internationale blues festival" (Expand Search)
"het de internationale dour festival" » "het de internationale des festival" (Expand Search), "het de internationale de festival" (Expand Search), "het de internationale dag festival" (Expand Search), "het _ international dour festival" (Expand Search), "met de internationale dour festival" (Expand Search), "het doel internationale dour 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 de internationale dour festival\") OR (\"en eerste internationale blues festival\"))~".
• Removing quotes may allow a broader search: (( het de internationale dour festival ) OR ( en eerste internationale blues festival ))~.
• Adding a wildcard symbol may retrieve word variants: (("het de internationale dour festival") OR ("en eerste internationale blues festival"))*.