Perhaps you should try some spelling variations:
internationaal seminar » international seminar (Expand Search), internationaal seminarie (Expand Search), internationaal verdrag (Expand Search)
international mars » internationale mars (Expand Search), international day (Expand Search), international call (Expand Search)
het internationaal » _ international (Expand Search), de internationale (Expand Search)
international a » international de (Expand Search), internationale de (Expand Search), internationale des (Expand Search)

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

• Removing quotes may allow a broader search: (( _ ((international mars) OR (international a)) prize ) OR ( het internationaal seminar prize )).