Perhaps you should try some spelling variations:
communication conversation » communication information, communication cohesion, communication communication
conversation basic » conversations basics, conversacion basica, conversation based
basic dimensional » basic dimensions, bai dimensional, bi dimensional
diffusion flames » diffusion fast

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 basic dimensional ((diffusion flames) OR (diffusion based))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "communication conversation basic dimensional ((diffusion flames) OR (diffusion based))".
• Adding a wildcard symbol may retrieve word variants: communication conversation basic dimensional ((diffusion flames) OR (diffusion based))*.