החיפוש שביצעת - ((communication aggression) OR (communication cohesion)) all directional databases optimizing* - חזר ריק.

אולי כדאי לנסות איות אחר או כתיב מלא:
communication aggression » communication apprehension, communication addresses, communications session
communication cohesion » communication collections, communication control, communication cost
directional databases » directional database, dimensional databases, relational databases
databases optimizing » catalysis optimizing, analysis optimizing, databases mining
all directional » a directional, le directional, scale directional

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