Perhaps you should try some spelling variations:
communication conversion » communication conversation, communications convention, communication cohesion
conversion del » conversion _
del definition » model definition, debt definition, real definition
evolving game » solving game, evolving genes, evolving a
solving games » solving cases, solving case, solving based

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication conversion del definition ((evolving game) or (solving games))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication conversion del definition ((evolving game) OR (solving games)).
• Adding a wildcard symbol may retrieve word variants: communication conversion del definition ((evolving game) or (solving games))*.