Perhaps you should try some spelling variations:
communicative functions » communication foundations
based extraction » based interaction, phase extraction, based education
functions based » function based
array profiling » array processing, microarray profiling
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.

• If you are trying to use Boolean operators, they must be ALL CAPS: communicative functions based extraction ((((array string) OR (array profiling))) OR (arrays ang))~.
• Adding a wildcard symbol may retrieve word variants: communicative functions based extraction ((((array string) or (array profiling))) or (arrays ang))*.