Perhaps you should try some spelling variations:
complexity approximation » complex approximation, complexity applications, completeness approximation
approximation based » approximation a
based extensible » based extension, based extensions, based reversible
array sharing » arrays bearing, array imaging, way sharing
array string » array strong, arrays strings, array forming
array using » arrays using

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: complexity approximation based extensible ((array string) OR (((array using) OR (array sharing))))~.
• Adding a wildcard symbol may retrieve word variants: complexity approximation based extensible ((array string) or (((array using) or (array sharing))))*.