Perhaps you should try some spelling variations:
"de internationale mars prize" » "de internationale des prize" (Expand Search), "de internationale dag prize" (Expand Search), "de internationale de prize" (Expand Search), "_ international mars prize" (Expand Search), "_ internationale mars prize" (Expand Search), "het internationaale mars prize" (Expand Search), "en internationalee mars prize" (Expand Search)
"de international solidarity prize" » "_ international solidarity prize" (Expand Search), "het internationaal solidarity prize" (Expand Search), "en internationale solidarity prize" (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("de internationale mars prize") OR ("de international solidarity prize"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"de internationale mars prize\") OR (\"de international solidarity prize\"))*".
• Removing quotes may allow a broader search: (( de internationale mars prize ) OR ( de international solidarity prize ))*.