Perhaps you should try some spelling variations:
internationale seminar » international seminar (Expand Search), internationaal seminarie (Expand Search), internationale mars (Expand Search)
internationale meeting » international meeting (Expand Search), internationale samenwerking (Expand Search)
zesde internationale » eerste internationale (Expand Search), en internationale (Expand Search), de international (Expand Search)
de internationale » _ international (Expand Search)

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

• Removing quotes may allow a broader search: (( zesde internationale seminar prize ) OR ( de internationale meeting prize ))*.