החיפוש שביצעת - ((communication concepts) or (communication applications)) made precision angle routing - חזר ריק.

אולי כדאי לנסות איות אחר או כתיב מלא:
communication applications » communication education, education applications
communication concepts » communication circuits, communication congresses, communication channels
made precision » model precision, de precision, mice precision
angle routing » angle crossing, aware routing, node routing

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