החיפוש שביצעת - communications convention summary ((mining databases) OR (imaging databases)) under - חזר ריק.

אולי כדאי לנסות איות אחר או כתיב מלא:
communications convention » communications connections, communication connection, communication conversation
convention summary » convection summary, connection summary, correction summary
imaging databases » imaging database, imaging atlases, image databases
mining databases » building databases, existing databases, testing databases

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