Perhaps you should try some spelling variations:
communication conversation » communication information, communication cohesion, communication foundation
dimensions damage » dimensional damage, dimensions image, dimensions age
pit dimensions » new dimensions, _ dimensions, 2 dimensions
damage liver » damage levels, stage liver

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((communication conversation) or (communication communication)) pit dimensions damage liver~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((communication conversation) OR (communication communication)) pit dimensions damage liver.
• Adding a wildcard symbol may retrieve word variants: ((communication conversation) or (communication communication)) pit dimensions damage liver*.