Talvez debería tentar con algunhas variantes ortográficas:
information source » information sources, information resource, information resources
spaces expression » species expression, spaces expressing, pages expression
source spaces » source space, resource space, source spanish
array string » array strong, arrays strings, array sharing
array arcing » array forming, array probing, 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 source spaces expression ((array string) or (((array format) or (array arcing))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: information source spaces expression ((array string) OR (((array format) OR (array arcing)))).
• Adding a wildcard symbol may retrieve word variants: information source spaces expression ((array string) or (((array format) or (array arcing))))*.