Perhaps you should try some spelling variations:
variations compression » equations compression, evaluation compression, irrigation compression
compression concurrent » compression document, computation concurrent
concurrent programming » constraint programming, concurrent programs
array processing » dairy processing, query 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: variations compression concurrent programming ((array string) OR (array processing))~.
• Adding a wildcard symbol may retrieve word variants: variations compression concurrent programming ((array string) or (array processing))*.