Perhaps you should try some spelling variations:
computation concurrent » compression concurrent, formulation concurrent, simulation concurrent
concurrent programming » constraint programming, concurrent programs
functions computation » function computation, functions composition, function composition
query processing » fishery processing
array string » array strong, arrays strings, array sharing

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: functions computation concurrent programming ((array string) OR (query processing))~.
• Adding a wildcard symbol may retrieve word variants: functions computation concurrent programming ((array string) or (query processing))*.