Perhaps you should try some spelling variations:
information about » information age, information a
spaces extensions » spaces extension, traces extensions, squares extensions
array forming » array format, array fermi, array formats
about spaces » about space, about snakes, about places
array arcing » array probing, array sharing, array using

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

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