也許你應該嘗試一些拼寫變化:
communication collision » communication commission, communication cohesion, communication collections
systems dimensions » systems dimensioning, systems extensions, systems discussions
collision systems » collisions systems, collision system, collection systems
gauge spaces » safe spaces
large space » large sparse, large scale, large surface
use spaces » tuple spaces, phase spaces, whose spaces

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• Performing a fuzzy search may retrieve terms with similar spellings: communication collision systems dimensions ((((gauge spaces) or (use spaces))) or (large space))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication collision systems dimensions ((((gauge spaces) OR (use spaces))) OR (large space)).
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