Perhaps you should try some spelling variations:
surface diffusion » state diffusion
information gis » information gain, information gaps, information grid
array formats » assay formats, array formulas, ready formats
array string » array strong, arrays strings, array sharing
gis surface » gas surface, gibbs surface, axis surface

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

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