Perhaps you should try some spelling variations:
communication control » communication concepts, communication culture, communication channel
case divisions » class divisions, case decisions, course divisions
sample spaces » sample space, sample speeches, sample sizes
gauge spaces » large space, safe spaces, use spaces
tuple spaces » tuple space, type spaces, triple space

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: communication control case divisions ((((gauge spaces) or (sample spaces))) or (tuple spaces))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication control case divisions ((((gauge spaces) OR (sample spaces))) OR (tuple spaces)).
• Adding a wildcard symbol may retrieve word variants: communication control case divisions ((((gauge spaces) or (sample spaces))) or (tuple spaces))*.