Perhaps you should try some spelling variations:
volumetric radial » volumetric medical, volumetric cardiac, volumetric real
goes volumetric » gases volumetric, gas volumetric, model volumetric
radial threats » radicals threats, racial threat, radial thrusts
net world » next world, best world, text world
iot world » post world, lost world, art 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 ((net world) OR (iot world)) goes volumetric radial threats*".