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 formats » array format, assay formats, array formulas
array arcing » array forming, array probing, array sharing
gis surface » gas surface, gibbs surface, axis surface

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "information gis surface diffusion ((((array arcing) OR (array formats))) OR (array processing))~".
• Adding a wildcard symbol may retrieve word variants: information gis surface diffusion ((((array arcing) OR (array formats))) OR (array processing))*.