Perhaps you should try some spelling variations:
communication concepts » communication circuits, communication congresses, communication channels
content dimensions » concept dimensions, constant dimension, current dimensions
concepts content » concept content, concepts context, concepts contexts
tuple spaces » tuple space, triple space
shape spaces » shape space, shared spaces, state spaces
type spaces » state spaces

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

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