Perhaps you should try some spelling variations:
communication conclusion » communication conclusions, communications conclusion, communications concluding
conclusion methods » inclusion methods, convolution methods, conclusion ethics
methods diffusion » networks diffusion, methods decision
gauge spaces » large space, safe spaces
phase spaces » phase space, shape spaces, state spaces
use spaces » tuple spaces, whose 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 conclusion methods diffusion ((((use spaces) OR (gauge spaces))) OR (phase spaces))~.
• Adding a wildcard symbol may retrieve word variants: communication conclusion methods diffusion ((((use spaces) or (gauge spaces))) or (phase spaces))*.