Perhaps you should try some spelling variations:
surface diffusion » state diffusion
information road » information load, information real, information role
array formulas » area formulas, harrop formulas, array format
road surface » land surface, 3d surface
array arcing » array forming, array probing, array sharing
array string » array strong, arrays strings, array sharing

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 road surface diffusion ((((array arcing) OR (array string))) OR (array formulas))~.
• Adding a wildcard symbol may retrieve word variants: information road surface diffusion ((((array arcing) or (array string))) or (array formulas))*.