Perhaps you should try some spelling variations:
communication conditions » communicational conditions, communication foundations, communication contributions
conditions methods » foundations methods, conduction methods, conditions metabolic
methods diffusion » networks diffusion, methods decision
tuple spaces » tuple space, type spaces, triple space
state spaces » state space
use spaces » phase spaces, gauge spaces, whose 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 conditions methods diffusion ((((use spaces) or (tuple spaces))) or (state spaces))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication conditions methods diffusion ((((use spaces) OR (tuple spaces))) OR (state spaces)).
• Adding a wildcard symbol may retrieve word variants: communication conditions methods diffusion ((((use spaces) or (tuple spaces))) or (state spaces))*.