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

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) OR (observations astronomical)) union/union ((astronomique internationale) OR (assyriologique internationale)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((international astronomical) or (observations astronomical)) union/union ((astronomique internationale) OR (assyriologique internationale))".
• Adding a wildcard symbol may retrieve word variants: ((international astronomical) or (observations astronomical)) union/union ((astronomique internationale) OR (assyriologique internationale))*.