Perhaps you should try some spelling variations:
information robots » information problems, information problem, information report
surfaces tension » surface tension, surfaces extension, surfaces detection
robots surfaces » coons surfaces, porous surfaces, regions surfaces
array string » array strong, arrays strings, array sharing
array using » arrays using

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

• If you are trying to use Boolean operators, they must be ALL CAPS: information robots surfaces tension ((((array string) OR (array using))) OR (array format))~.
• Adding a wildcard symbol may retrieve word variants: information robots surfaces tension ((((array string) or (array using))) or (array format))*.