Perhaps you should try some spelling variations:
"en de internationale blues festival" » "en de internationale belge festival" (Expand Search), "en de internationale de festival" (Expand Search), "en de internationale avec festival" (Expand Search), "en _ international blues festival" (Expand Search)
"de eerste internationale des festival" » "de eerste internationale doel festival" (Expand Search), "de eerste internationale heus festival" (Expand Search), "de eerste 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: (("de eerste internationale des festival") OR ("en de internationale blues festival"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"de eerste internationale des festival\") OR (\"en de internationale blues festival\"))*".
• Removing quotes may allow a broader search: (( de eerste internationale des festival ) OR ( en de internationale blues festival ))*.