Perhaps you should try some spelling variations:
surface diffusion » state diffusion
information gas » information gaps, information gap, information gis
array probing » arrays probing, assay probing, array profiling
array arcing » array forming, array sharing, array using
array string » array strong, arrays strings, array sharing
gas surface » its surface, trans surface

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

• Performing a fuzzy search may retrieve terms with similar spellings: information gas surface diffusion ((array arcing) OR (((array string) OR (array probing))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "information gas surface diffusion ((array arcing) OR (((array string) OR (array probing))))".
• Adding a wildcard symbol may retrieve word variants: information gas surface diffusion ((array arcing) OR (((array string) OR (array probing))))*.