Perhaps you should try some spelling variations:
surface diffusion » state diffusion
information gas » information gaps, information gap, information gis
arrays probing » array probing, rays probing, arrays producing
array forming » array format, array arcing, array fermi
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 forming) or (((array string) or (arrays probing))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information gas surface diffusion ((array forming) OR (((array string) OR (arrays probing)))).
• Adding a wildcard symbol may retrieve word variants: information gas surface diffusion ((array forming) or (((array string) or (arrays probing))))*.