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