Perhaps you should try some spelling variations:
"canthal angle" » "central angle", "cant angle"
"radial angle" » "axial angle", "radial angular", "ostial angle"
"carpal angle" » "corneal angle", "axial angle", "carpal canal"
"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 axis") OR ((("radial angle") OR ((("canthal angle") OR ("carpal angle")))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"radial axis\") or (((\"radial angle\") or (((\"canthal angle\") OR (\"carpal angle\"))))))".
• Removing quotes may allow a broader search: (( radial axis ) or ((( radial angle ) or ((( canthal angle ) OR ( carpal angle )))))).
• Adding a wildcard symbol may retrieve word variants: (("radial axis") or ((("radial angle") or ((("canthal angle") OR ("carpal angle"))))))*.