Perhaps you should try some spelling variations:
communication concepts » communication circuits, communication congresses, communication channels
lower dimensional » low dimensional, one dimensional, four dimensional
concepts lower » concepts power, concepts life, concepts laue
shared spaces » shared space, shared stocks
scaled space » scale space, shared space, scale 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 concepts lower dimensional ((((scaled space) or (shared spaces))) or (tuple spaces))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication concepts lower dimensional ((((scaled space) OR (shared spaces))) OR (tuple spaces)).
• Adding a wildcard symbol may retrieve word variants: communication concepts lower dimensional ((((scaled space) or (shared spaces))) or (tuple spaces))*.