Perhaps you should try some spelling variations:
communication information » communication international, communication education
basic conventional » basics conventional, cases conventional, organic conventional
fast conventional » from conventional, a conventional, vs conventional
diffusive limit » diffusion limit, diffusive climate, diffusion limited

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication information ((basic conventional) OR (fast conventional)) diffusive limit~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "communication information ((basic conventional) OR (fast conventional)) diffusive limit".
• Adding a wildcard symbol may retrieve word variants: communication information ((basic conventional) OR (fast conventional)) diffusive limit*.