Perhaps you should try some spelling variations:
spaces extensions » spaces extension, traces extensions, squares extensions
information use » information using
array imaging » arrays imaging, airway imaging, ray imaging
array string » array strong, arrays strings, array sharing
array arcing » array forming, array probing, array sharing
use spaces » tuple spaces, phase spaces, gauge spaces

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

• If you are trying to use Boolean operators, they must be ALL CAPS: information use spaces extensions ((((array imaging) OR (array string))) OR (array arcing))~.
• Adding a wildcard symbol may retrieve word variants: information use spaces extensions ((((array imaging) or (array string))) or (array arcing))*.