Perhaps you should try some spelling variations:
information agents » information age, information access, information about
control extending » control enhancing, control leading
agents control » agent control, ants control, agents central
array planning » library planning, therapy planning
array imaging » arrays imaging, airway imaging, ray imaging
array string » array strong, arrays strings, array sharing

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

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