Perhaps you should try some spelling variations:
information collection » information extraction, information communication
methods extending » networks extending, methods finding, methods enhancing
array forming » array format, array fermi, array formats
array arcing » array probing, array sharing, array using
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 collection methods extending ((((array arcing) or (array string))) or (array forming))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information collection methods extending ((((array arcing) OR (array string))) OR (array forming)).
• Adding a wildcard symbol may retrieve word variants: information collection methods extending ((((array arcing) or (array string))) or (array forming))*.