Perhaps you should try some spelling variations:
information robots » information problems, information problem, information report
surface expression » surface erosion
robots surface » rabbits surface, riblets surface, foods surface
array sharing » array string, arrays bearing, array imaging
array forming » array arcing, array fermi, array formats

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

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