Perhaps you should try some spelling variations:
"kelly's criterion" » "kelly criterion", "levy's criterion", "euler's criterion"
"linker's criteria" » "funder's criteria", "concerns criteria"
"well's criterion" » "kelly criterion", "levy's criterion", "li's criterion"
"weyl's criterion" » "weil's 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 ("kelly's criterion"))))) OR ("linker's criteria")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"weyl's criterion\") or (((\"well's criterion\") OR (\"kelly's criterion\"))))) or (\"linker's criteria\"))".
• Removing quotes may allow a broader search: (((( weyl's criterion ) or ((( well's criterion ) OR ( kelly's criterion ))))) or ( linker's criteria )).
• Adding a wildcard symbol may retrieve word variants: (((("weyl's criterion") or ((("well's criterion") OR ("kelly's criterion"))))) or ("linker's criteria"))*.