Perhaps you should try some spelling variations:
communication conversation » communication information, communication cohesion, communication communication
conversation case » conversational case, conversation based, conversation made
dimensions index » dimensional index, dimensions under, dimensions kinds
dimensions des » dimensions sdes, dimensions key, dimensions eu

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 case ((dimensions index) or (dimensions des)) tree~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication conversation case ((dimensions index) OR (dimensions des)) tree.
• Adding a wildcard symbol may retrieve word variants: communication conversation case ((dimensions index) or (dimensions des)) tree*.