Perhaps you should try some spelling variations:
communicative functions » communication foundations
functions based » function based
based extension » based extraction
array probing » arrays probing, assay probing, array 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 extension ((((array string) OR (array probing))) OR (arrays ang))~.
• Adding a wildcard symbol may retrieve word variants: communicative functions based extension ((((array string) or (array probing))) or (arrays ang))*.