Perhaps you should try some spelling variations:
communication concepts » communication circuits, communication congresses, communication channels
one dimensional » two dimensional, three dimensional
shared spaces » shared space, shared stocks
concepts one » concepts over, concepts 2nd, concepts out
tuple spaces » tuple space, triple space
type spaces » state spaces

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: communication concepts one dimensional ((shared spaces) OR (((tuple spaces) OR (type spaces))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "communication concepts one dimensional ((shared spaces) or (((tuple spaces) OR (type spaces))))~".
• Adding a wildcard symbol may retrieve word variants: communication concepts one dimensional ((shared spaces) or (((tuple spaces) OR (type spaces))))*.