Perhaps you should try some spelling variations:
containers collection » containing collections, containers section, containers creation
frontiers selection » frontiers section, frontier section, frontier electron
code connections » node connections, some connections, code conventions

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 ((((containers collection) OR (code connections))) OR (frontiers selection))%22.
• Adding a wildcard symbol may retrieve word variants: %22the ((((containers collection) or (code connections))) or (frontiers selection))%22*.