Perhaps you should try some spelling variations:
surface diffusion » state diffusion
array processing » dairy processing, query processing
information act » information age, information a, information about
array planning » library planning, therapy planning
array string » array strong, arrays strings, array sharing
act surface » actin surface, bet surface, cut surface

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

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