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 formats » array format, assay formats, array formulas
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: informative group surface diffusion ((((array using) OR (array string))) OR (array formats))~.
• Adding a wildcard symbol may retrieve word variants: informative group surface diffusion ((((array using) or (array string))) or (array formats))*.