Perhaps you should try some spelling variations:
informative group » informatics group, informative top, innovative group
surface diffusion » state diffusion
group surface » ground surface, auroux surface, rough surface
array string » array strong, arrays strings, array sharing
array using » arrays using

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "informative group surface diffusion ((array string) OR (((array format) OR (array using))))~".
• Adding a wildcard symbol may retrieve word variants: informative group surface diffusion ((array string) OR (((array format) OR (array using))))*.