Perhaps you should try some spelling variations:
"well's criterion" » "kelly's criterion", "kelly criterion", "levy's criterion"
"weil's criterion" » "kelly's criterion", "white's criterion", "levy's criterion"
"wiener criterion" » "wiener's criterion", "wiener criteria", "linear criterion"

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: (((((("weyl's criterion") OR ("well's criterion"))) OR ("weil's criterion"))) OR ((("wiener criterion") OR ("fisher criterion")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"weyl's criterion\") OR (\"well's criterion\"))) or (\"weil's criterion\"))) or (((\"wiener criterion\") or (\"fisher criterion\"))))".
• Removing quotes may allow a broader search: (((((( weyl's criterion ) OR ( well's criterion ))) or ( weil's criterion ))) or ((( wiener criterion ) or ( fisher criterion )))).
• Adding a wildcard symbol may retrieve word variants: (((((("weyl's criterion") OR ("well's criterion"))) or ("weil's criterion"))) or ((("wiener criterion") or ("fisher criterion"))))*.