Perhaps you should try some spelling variations:
internationale seminar » international seminar (Expand Search), internationaal seminarie (Expand Search), internationale meeting (Expand Search)
het internationaal » _ international (Expand Search), de internationale (Expand Search)
internationaal dag » internationale dag (Expand Search), international day (Expand Search), internationaal van (Expand Search)
en internationale » de internationale (Expand Search), _ international (Expand Search), eerste internationale (Expand Search)

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

• Removing quotes may allow a broader search: (( het internationaal dag prize ) OR ( en internationale seminar prize ))~.