Perhaps you should try some spelling variations:
communications convention » communications connections, communication connection, communication conversation
euclidean geometries » euclidean geometry
euclidean notions » euclidean motions, euclidean motion, euclidean sections
convention fast » conventions fast, conversion fast, convention fort
fast moving » fast growing

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• Performing a fuzzy search may retrieve terms with similar spellings: communications convention fast moving ((euclidean geometries) or (euclidean notions))~.
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