Perhaps you should try some spelling variations:
communication conversation » communication information, communication cohesion, communication communication
conversation design » conversations design, conversion design, conversations sign
design dimensions » design decisions
sessions general » questions general, session geneva, designs general
lesions general » lesions central, designs general, lesions genital

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 design dimensions ((sessions general) OR (lesions general))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "communication conversation design dimensions ((sessions general) OR (lesions general))".
• Adding a wildcard symbol may retrieve word variants: communication conversation design dimensions ((sessions general) OR (lesions general))*.