החיפוש שביצעת - "((communication adhesion) OR (communication affection)) all relational database optimising" - חזר ריק.

אולי כדאי לנסות איות אחר או כתיב מלא:
communication affection » communication affecting, communicating affection, communication effective
communication adhesion » communication cohesion, communication aggression, communication decision
relational database » relational databases
database optimising » databases optimizing, data optimising, database optimized
all relational » full relational, xml relational, all rational

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