Perhaps you should try some spelling variations:
internationale seminar » international seminar (Expand Search), internationaal seminarie (Expand Search), internationale meeting (Expand Search)
het internationale » de internationale (Expand Search), het internationaal (Expand Search), en internationale (Expand Search)
internationale dag » internationale des (Expand Search), internationale de (Expand Search), international de (Expand Search)
et internationale » en internationale (Expand Search), een internationale (Expand Search), de internationale (Expand Search)

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

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