Perhaps you should try some spelling variations:
volumetric metal » volumetric meta, volumetric real, volumetric medical
a volumetric » _ volumetric
metal beams » metal foams, metals foams
ice worlds » life worlds, five worlds, inner worlds
ice world » since world, ieee world, wide world

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "2008 ((ice world) OR (ice worlds)) a volumetric metal beams".
• Adding a wildcard symbol may retrieve word variants: 2008 ((ice world) OR (ice worlds)) a volumetric metal beams*.