Perhaps you should try some spelling variations:
surface diffusion » state diffusion
array processing » dairy processing, query processing
information gis » information gain, information gaps, information grid
array string » array strong, arrays strings, array sharing
gis surface » gas surface, gibbs surface, axis surface
array along » arrays long, array arcing, array paving

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

• Performing a fuzzy search may retrieve terms with similar spellings: information gis surface diffusion ((((array along) or (array string))) or (array processing))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information gis surface diffusion ((((array along) OR (array string))) OR (array processing)).
• Adding a wildcard symbol may retrieve word variants: information gis surface diffusion ((((array along) or (array string))) or (array processing))*.