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