Perhaps you should try some spelling variations:
type declarations » dying declarations, _ declarations
true declaration » type declaration, true declination, de declaration
european science » european defence, european societies, european society

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: ((true declaration) OR (type declarations)) on european science AND communism.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((true declaration) OR (type declarations)) on european science and communism".
• Adding a wildcard symbol may retrieve word variants: ((true declaration) OR (type declarations)) on european science and communism*.