Perhaps you should try some spelling variations:
surface diffusion » state diffusion
information gap » information guide
arrays imaging » array imaging, assays imaging, pathways imaging
array arcing » array forming, array probing, array sharing
array string » array strong, arrays strings, array sharing
gap surface » egfp surface, tip surface, 1a surface

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

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