Perhaps you should try some spelling variations:
communication functions » communicative functions, communication foundations, communication foundation
array processing » dairy processing, query processing
functions based » function based
based extension » based extraction
array string » array strong, arrays strings, array sharing
arrays ang » arrays a

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

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