Perhaps you should try some spelling variations:
volumetric multi » volumetric mri, volumetric meta, volumetric mist
gas volumetric » gases volumetric, a volumetric, based volumetric
multi beams » multi beam, multi team, multi seam
wise world » wiser world, wide world, white world
wie world » wide world, wien world, die world

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: 2008 ((wie world) OR (wise world)) gas volumetric multi beams.
• Adding a wildcard symbol may retrieve word variants: 2008 ((wie world) or (wise world)) gas volumetric multi beams*.