Perhaps you should try some spelling variations:
information group » informatics group, informative group, information grounds
surface diffusion » state diffusion
group surface » ground surface, auroux surface, rough 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.

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