Perhaps you should try some spelling variations:
communications convention » communications connections, communication connection, communication conversation
convention fast » conventions fast, conversion fast, convention fort
david resolving » dates resolving, data resolving, design resolving
fast decision » fat decision, first decision, coast decision
data proving » data improving, data providing, data moving

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

• If you are trying to use Boolean operators, they must be ALL CAPS: communications convention fast decision ((david resolving) OR (data proving))~.
• Adding a wildcard symbol may retrieve word variants: communications convention fast decision ((david resolving) or (data proving))*.