Perhaps you should try some spelling variations:
"halen internationale memorial prize" » "halen internationale meeting prize" (Expand Search), "en internationale memorial prize" (Expand Search), "de internationale memorial prize" (Expand Search), "et internationale memorial prize" (Expand Search)
"een internationale memorial prize" » "een internationale meeting prize" (Expand Search), "en internationale memorial prize" (Expand Search), "de internationale memorial prize" (Expand Search), "de international memorial prize" (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: (("halen internationale memorial prize") OR ("een internationale memorial prize"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"halen internationale memorial prize\") OR (\"een internationale memorial prize\"))".
• Removing quotes may allow a broader search: (( halen internationale memorial prize ) OR ( een internationale memorial prize )).
• Adding a wildcard symbol may retrieve word variants: (("halen internationale memorial prize") OR ("een internationale memorial prize"))*.