החיפוש שביצעת - international convention ((cumulative questions) OR (cumulative functions)) data louvres - חזר ריק.

אולי כדאי לנסות איות אחר או כתיב מלא:
international convention » international cooperation, international context, international communication
cumulative questions » comparative questions, formulating questions, cumulative causation
cumulative functions » communicative functions, cognitive functions, multiple functions
data louvres » data losses

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