החיפוש שביצעת - information documents varying functions ((causes climate) or (challenges climate)) - חזר ריק.

אולי כדאי לנסות איות אחר או כתיב מלא:
information documents » information documentation, information agents, information requirements
documents varying » documents querying, documents learning, documents adding
varying functions » ranking functions, training functions, scoring functions
causes climate » changes climate, campus climate, cities climate

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