Perhaps you should try some spelling variations:
chains diffusion » chains diffusions, channel diffusion, brain diffusion
array profiling » array processing, microarray profiling
guide chains » side chains, guide chris, guide china
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 guide chains diffusion ((array arcing) or (((array string) or (array profiling))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information guide chains diffusion ((array arcing) OR (((array string) OR (array profiling)))).
• Adding a wildcard symbol may retrieve word variants: information guide chains diffusion ((array arcing) or (((array string) or (array profiling))))*.