Perhaps you should try some spelling variations:
surface diffusion » state diffusion
information gaps » information gap, information games, information gain
array sharing » arrays bearing, array imaging, way sharing
gaps surface » gas surface, maps surface, glass surface
array string » array strong, arrays strings, array forming
array along » arrays long, array arcing, array paving

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

• Performing a fuzzy search may retrieve terms with similar spellings: information gaps surface diffusion ((((array sharing) or (array string))) or (array along))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information gaps surface diffusion ((((array sharing) OR (array string))) OR (array along)).
• Adding a wildcard symbol may retrieve word variants: information gaps surface diffusion ((((array sharing) or (array string))) or (array along))*.