Perhaps you should try some spelling variations:
communication documentation » communication foundation, communication communication, communication conversation
documentation based » documentation fast, documentation a, documentation center
based decisions » based decision
david silver's » david siders
daniel silver » daniel sir, daniel scher

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication documentation based decisions ((david silver's) or (daniel silver))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication documentation based decisions ((david silver's) OR (daniel silver)).
• Adding a wildcard symbol may retrieve word variants: communication documentation based decisions ((david silver's) or (daniel silver))*.