החיפוש שביצעת - communication control basic dimensions regression splines* - חזר ריק.

אולי כדאי לנסות איות אחר או כתיב מלא:
communication control » communication concepts, communication culture, communication channel
dimensions regression » dimensional regression, dimensions impression, dimensions session
regression splines » regression linear, regression applied, regression nonlinear
basic dimensions » based dimension, pacific dimensions, design dimensions
control basic » control basics, control asia, control based

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