Perhaps you should try some spelling variations:
information ground » information grounds, information group, information grid
source diffusion » resource diffusion, surface diffusion, double diffusion
ground source » sound source, ground surface, sound sources
array formats » array format, assay formats, array formulas
array probing » arrays probing, assay probing, array profiling
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 ground source diffusion ((array string) or (((array formats) or (array probing))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information ground source diffusion ((array string) OR (((array formats) OR (array probing)))).
• Adding a wildcard symbol may retrieve word variants: information ground source diffusion ((array string) or (((array formats) or (array probing))))*.