Perhaps you should try some spelling variations:
ostial angle » optimal angle, optical angle, optical angles
radial angle » axial angle, radial angular, carpal angle
radial axle » radial axial
radial axis » radial basis, radial axial, medial axis

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: (( ((radial axle) OR (radial axis)) ) OR ((( radial angle ) OR ( ostial angle )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((radial axle) OR (radial axis)) ) or ((( radial angle ) or ( ostial angle ))))".
• Adding a wildcard symbol may retrieve word variants: (( ((radial axle) OR (radial axis)) ) or ((( radial angle ) or ( ostial angle ))))*.