Perhaps you should try some spelling variations:
surface diffusion » state diffusion
information gis » information gain, information gaps, information grid
array probing » arrays probing, assay probing, array profiling
gis surface » gas surface, gibbs surface, axis surface
array along » arrays long, array arcing, array paving
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 along) or (array using))) or (array probing))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information gis surface diffusion ((((array along) OR (array using))) OR (array probing)).
• Adding a wildcard symbol may retrieve word variants: information gis surface diffusion ((((array along) or (array using))) or (array probing))*.