Perhaps you should try some spelling variations:
paraboloid » paraboloides, parabolic
paraboloideseees » paraboloideseseees, paraboliceseees, paraboloides
paraboloidees » paraboloidesees, parabolicees, paraboloides
paraboloide » paraboloidese, parabolice
paraboloidal » paraboloidesal, parabolical, paraboloides, parabolicas, hemiparaboloidal
paraboloids » paraboloidess, parabolics

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: (paraboloid OR (parabolices OR (paraboloideseees OR ((parabolica OR ((paraboloidees OR paraboloide) OR paraboloidal)) OR paraboloids))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(paraboloid or (parabolices or (paraboloideseees or ((parabolica or ((paraboloidees OR paraboloide) or paraboloidal)) or paraboloids))))~".
• Adding a wildcard symbol may retrieve word variants: (paraboloid or (parabolices or (paraboloideseees or ((parabolica or ((paraboloidees OR paraboloide) or paraboloidal)) or paraboloids))))*.