Perhaps you should try some spelling variations:
surface diffusion » state diffusion
information rich » information research
array processing » dairy processing, query processing
rich surface » pitch surface, high surface, pichia surface
array string » array strong, arrays strings, array sharing
array arcing » array forming, array probing, array sharing

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

• Performing a fuzzy search may retrieve terms with similar spellings: information rich surface diffusion ((array string) OR (((array arcing) OR (array processing))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "information rich surface diffusion ((array string) OR (((array arcing) OR (array processing))))".
• Adding a wildcard symbol may retrieve word variants: information rich surface diffusion ((array string) OR (((array arcing) OR (array processing))))*.