Perhaps you should try some spelling variations:
information spaces » information sources, information series, information services
data expressions » xpath expressions, zeta expression, case expressions
array string » array strong, arrays strings, array sharing
array arcing » array forming, array probing, array sharing
spaces data » space data, spaces day, spaces dea

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

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