Perhaps you should try some spelling variations:
communication application » communication applications, communications application, communications applications
methods diffusion » networks diffusion, methods decision
shape spaces » shape space, shared spaces, state spaces
tuple spaces » tuple space, triple space
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 application methods diffusion ((((shape spaces) or (tuple spaces))) or (type spaces))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication application methods diffusion ((((shape spaces) OR (tuple spaces))) OR (type spaces)).
• Adding a wildcard symbol may retrieve word variants: communication application methods diffusion ((((shape spaces) or (tuple spaces))) or (type spaces))*.