Perhaps you should try some spelling variations:
information grid » information guide, information gain, information gis
state diffusion » surface diffusion
array string » array strong, arrays strings, array sharing
array arcing » array forming, array probing, array sharing
array fermi » array forming, array format
grid state » grids state, grid scale, grid site

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 grid state diffusion ((array string) OR (((array fermi) OR (array arcing))))~.
• Adding a wildcard symbol may retrieve word variants: information grid state diffusion ((array string) or (((array fermi) or (array arcing))))*.