Perhaps you should try some spelling variations:
paraboloid » paraboloide, paraboloides, parabolic
paraboloidees » paraboloideees, paraboloidesees, parabolicees, paraboloides, paraboloide
paraboloids » paraboloides, paraboloidess, parabolics
paraboloidal » paraboloideal, paraboloidesal, parabolical, paraboloide, paraboloides, parabolica
paraboloideal » paraboloideeal, paraboloideseal, paraboliceal, paraboloide, paraboloides

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

• Performing a fuzzy search may retrieve terms with similar spellings: (paraboloid or ((paraboloidees or paraboloids) or (paraboloidal OR paraboloideal)))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (paraboloid OR ((paraboloidees OR paraboloids) OR (paraboloidal OR paraboloideal))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(paraboloid or ((paraboloidees or paraboloids) or (paraboloidal OR paraboloideal)))".
• Adding a wildcard symbol may retrieve word variants: (paraboloid or ((paraboloidees or paraboloids) or (paraboloidal OR paraboloideal)))*.