Perhaps you should try some spelling variations:
internationale seminar » international seminar (Expand Search), internationaal seminarie (Expand Search), internationale meeting (Expand Search)
een internationale » en internationale (Expand Search), de internationale (Expand Search), de international (Expand Search)
internationale de » internationale des (Expand Search), international de (Expand Search)
de prijs » te parijs (Expand Search), de paris (Expand Search)

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

• Removing quotes may allow a broader search: (( _ internationale de prijs ) OR ( een internationale seminar prize ))~.