Perhaps you should try some spelling variations:
"mathematician" » "mathematical", "mathematics"
"mathematicians" » "mathematicals", "mathematicss", "mathematics", "mathematical"
"mathematicans" » "mathematicals", "mathematiciens", "mathematics"

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: ("mathematician" OR ("mathematicians" OR "mathematicans")).
• Removing quotes may allow a broader search: ( mathematician or ( mathematicians or mathematicans )).
• Adding a wildcard symbol may retrieve word variants: ("mathematician" or ("mathematicians" or "mathematicans"))*.