Perhaps you should try some spelling variations:
communications conference » communications convergence, communication convergence, telecommunications conference
communication nonverbal » communication over
precision machine » precision machining, prediction machine, precision medicine
based precision » based decision, based prediction, based decisions
machine routing » machine using, machine reading, machine testing

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((communication nonverbal) or (communications conference)) based precision machine routing~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((communication nonverbal) OR (communications conference)) based precision machine routing.
• Adding a wildcard symbol may retrieve word variants: ((communication nonverbal) or (communications conference)) based precision machine routing*.