Perhaps you should try some spelling variations:
communication functions » communicative functions, communication foundations, communication foundation
based extraction » based interaction, phase extraction, based education
functions based » function based
array string » array strong, arrays strings, array sharing
array using » arrays using
arrays a » arrays _

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "communication functions based extraction ((((array using) OR (array string))) OR (arrays a))~".
• Adding a wildcard symbol may retrieve word variants: communication functions based extraction ((((array using) OR (array string))) OR (arrays a))*.