Perhaps you should try some spelling variations:
internationaal seminarie » international seminar (Expand Search), international solidarity (Expand Search)
internationale seminar » international seminar (Expand Search), internationale meeting (Expand Search), internationale mars (Expand Search)
een internationale » en internationale (Expand Search), de internationale (Expand Search), de international (Expand Search)
de internationaal » de international (Expand Search), het internationaal (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: (( een internationale seminar prize ) OR ( de internationaal seminarie prize ))~.