Perhaps you should try some spelling variations:
communication collision » communication commission, communication cohesion, communication collections
collision system » collection system, collection systems, vision system
system dimension » systems dimensions, erste dimension, system diffusion
ordered spaces » gendered spaces, border spaces
polar spaces » polar space, color spaces, holder spaces
large space » large sparse, large scale, large surface

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: communication collision system dimension ((((ordered spaces) or (polar spaces))) or (large space))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication collision system dimension ((((ordered spaces) OR (polar spaces))) OR (large space)).
• Adding a wildcard symbol may retrieve word variants: communication collision system dimension ((((ordered spaces) or (polar spaces))) or (large space))*.