Talvez debería tentar con algunhas variantes ortográficas:
subsurface diffusion » surface diffusion, surfaces diffusion, subsurface pollution
information group » informatics group, informative group, information grounds
group subsurface » ground subsurface, from subsurface, deep subsurface
array imaging » arrays imaging, airway imaging, ray imaging
array arcing » array forming, array probing, array sharing
array using » arrays using

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 group subsurface diffusion ((array imaging) OR (((array arcing) OR (array using))))~.
• Adding a wildcard symbol may retrieve word variants: information group subsurface diffusion ((array imaging) or (((array arcing) or (array using))))*.