החיפוש שביצעת - ((information documents) OR (information agents)) data suppression effects lieven - חזר ריק.

אולי כדאי לנסות איות אחר או כתיב מלא:
information documents » information documentation, information requirements
suppression effects » suppression effect, suppressive effects, suppressive effect
information agents » information age, information access, information about
data suppression » fat suppression, rate suppression, data compression

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