Perhaps you should try some spelling variations:
european concerted » european context, european conferences
europe conceptual » europe concepts, some conceptual, one conceptual
european concept » european concepts, european context, europe concept
history ser » history set, history sir, history sea

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: ((((european concerted) OR (european concept))) OR (europe conceptual)) history ser..
• Adding a wildcard symbol may retrieve word variants: ((((european concerted) or (european concept))) or (europe conceptual)) history ser.*.