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

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