החיפוש שביצעת - communication education ((based dimensions) OR (basic dimensions)) problems liver - חזר ריק.

אולי כדאי לנסות איות אחר או כתיב מלא:
communication education » community education, communication communication, communication information
based dimensions » based dimension, based dimensioning, based declensions
basic dimensions » based dimension, pacific dimensions, design dimensions
problems liver » problems linear, problems over, problems five

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