Perhaps you should try some spelling variations:
communication function » communication functions, communication foundation, communicative functions
function phase » function part, function plant, function plans
array imaging » arrays imaging, airway imaging, ray imaging
array string » array strong, arrays strings, array sharing
arrays a » arrays _

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

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