Perhaps you should try some spelling variations:
astronomique internationale » assyriologique internationale, autonomie internationaler, astronomy international
international astronomical » international economics, international economic, observations astronomical
economique internationale » economy international, politique internationale

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

• If you are trying to use Boolean operators, they must be ALL CAPS: international astronomical union / union ((astronomique internationale) OR (((economique internationale) OR (economics international)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "international astronomical union / union ((astronomique internationale) or (((economique internationale) OR (economics international))))".
• Adding a wildcard symbol may retrieve word variants: international astronomical union / union ((astronomique internationale) or (((economique internationale) OR (economics international))))*.