החיפוש שביצעת - communication fast its modes ((((euclidean space) or (euclidean dspaces))) or (euclidean half)) - חזר ריק.

אולי כדאי לנסות איות אחר או כתיב מלא:
communication fast » telecommunication fast
euclidean dspaces » euclidean spaces, euclidean distances, euclidean subspaces
euclidean half » euclidean ball, euclidean phase, euclidean case
its modes » its mode, its model
fast its » past its, fast iris, fast ions
space » dspace
dspaces » ddspaces

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