Perhaps you should try some spelling variations:
communication costs » communication cost, communication counts, communication cross
communication most » communication cost, communications cost, communication mass
methods diffusion » networks diffusion, methods decision
diffusion a » diffusion _
a induced » pma induced

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((communication most) or (communication costs)) methods diffusion a induced~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((communication most) OR (communication costs)) methods diffusion a induced.
• Adding a wildcard symbol may retrieve word variants: ((communication most) or (communication costs)) methods diffusion a induced*.