אולי כדאי לנסות איות אחר או כתיב מלא:
communication context » communication contexts, communication content, communicative context
united dimensions » units dimensions, finite dimensions, fixed dimensions
context united » content united, context invited, context unified
shape spaces » shape space, shared spaces, type spaces
shape dspace » shape space, shape distance, shape brace
state spaces » state space

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• Performing a fuzzy search may retrieve terms with similar spellings: communication context united dimensions ((((shape spaces) or (shape dspace))) or (state spaces))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication context united dimensions ((((shape spaces) OR (shape dspace))) OR (state spaces)).
• Adding a wildcard symbol may retrieve word variants: communication context united dimensions ((((shape spaces) or (shape dspace))) or (state spaces))*.