Talvez debería tentar con algunhas variantes ortográficas:
spaces extensions » spaces extension, traces extensions, squares extensions
information safe » information space, information state, information spare
array imaging » arrays imaging, airway imaging, ray imaging
array probing » arrays probing, assay probing, array profiling
array string » array strong, arrays strings, array sharing
safe spaces » state spaces, shape spaces, scale spaces

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

• Performing a fuzzy search may retrieve terms with similar spellings: information safe spaces extensions ((((array imaging) or (array string))) or (array probing))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information safe spaces extensions ((((array imaging) OR (array string))) OR (array probing)).
• Adding a wildcard symbol may retrieve word variants: information safe spaces extensions ((((array imaging) or (array string))) or (array probing))*.