Perhaps you should try some spelling variations:
communication information » communication international, communication education
errors multidimensional » arrays multidimensional, methods multidimensional, network multidimensional
information errors » information error, information entropy, information experts
case spaces » coarse spaces, phase spaces, scale spaces
space » dspace
spaces » dspaces

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• Performing a fuzzy search may retrieve terms with similar spellings: communication information errors multidimensional ((code space) or (case spaces))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication information errors multidimensional ((code space) OR (case spaces)).
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