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