Perhaps you should try some spelling variations:
information robots » information problems, information problem, information report
array processing » dairy processing, query processing
a expression » 1 expression, 2 expression, 4 expression
array string » array strong, arrays strings, array sharing
robots a » robots _

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: information robots a expression ((array string) or (((array format) or (array processing))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information robots a expression ((array string) OR (((array format) OR (array processing)))).
• Adding a wildcard symbol may retrieve word variants: information robots a expression ((array string) or (((array format) or (array processing))))*.