Perhaps you should try some spelling variations:
surface diffusion » state diffusion
information grid » information guide, information gain, information gis
array forming » array format, array fermi, array formats
grid surface » arid surface, gold surface, ground surface
array arcing » array probing, array sharing, array using
array string » array strong, arrays strings, array sharing

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

• Performing a fuzzy search may retrieve terms with similar spellings: information grid surface diffusion ((((array arcing) OR (array forming))) or (array string))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information grid surface diffusion ((((array arcing) OR (array forming))) OR (array string)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "information grid surface diffusion ((((array arcing) OR (array forming))) or (array string))".
• Adding a wildcard symbol may retrieve word variants: information grid surface diffusion ((((array arcing) OR (array forming))) or (array string))*.