Perhaps you should try some spelling variations:
frontieres cooperation » practices cooperation, frontier conversation, frontieres migration
containers collection » containing collections, containers section, containers creation
frontiers selection » frontiers section, frontier section, frontier electron
reuters collection » reducers collection, reactors collection, users collection
folders collection » folders connections, holders collective, leaders collection

Try widening your search to All Fields.

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: %22the ((((((((frontieres cooperation) OR (reuters collection))) OR (containers collection))) OR (folders collection))) OR (frontiers selection))%22.
• Adding a wildcard symbol may retrieve word variants: %22the ((((((((frontieres cooperation) or (reuters collection))) or (containers collection))) or (folders collection))) or (frontiers selection))%22*.