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
gis surface » gas surface, gibbs surface, axis surface
array using » arrays using

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 using) or (array format))) or (array processing))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information gis surface diffusion ((((array using) OR (array format))) OR (array processing)).
• Adding a wildcard symbol may retrieve word variants: information gis surface diffusion ((((array using) or (array format))) or (array processing))*.