Perhaps you should try some spelling variations:
communications computational » communication occupational, computation computational, communications companion
communication computational » communication occupational, computation computational, communication computing
methods diffusion » networks diffusion, methods decision
diffusion diane » diffusion de, diffusion case, diffusion flame
diane index » line index, disease index, finance index

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 computational) OR (communications computational)) methods diffusion diane index~.
• Adding a wildcard symbol may retrieve word variants: ((communication computational) or (communications computational)) methods diffusion diane index*.