החיפוש שביצעת - ((communication conversation) OR (communication communication)) de precision manure routing* - חזר ריק.

אולי כדאי לנסות איות אחר או כתיב מלא:
communication conversation » communication information, communication cohesion, communication foundation
precision manure » precision angle, precision makers, precision machine
manure routing » aware routing, secure routing, manet routing
de precision » de prevision, _ precision, a precision

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