Perhaps you should try some spelling variations:
"linker's criteria" » "funder's criteria", "concerns criteria", "line criteria"
"kelly criterion" » "energy criterion"
"pde's criteria" » "ideas criteria", "peers criteria", "models criteria"
"weyl's criterion" » "well'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 ("kelly criterion"))) OR ((("linker's criteria") OR ("pde's criteria")))).
• Removing quotes may allow a broader search: (((( weyl's criterion ) or ( kelly criterion ))) or ((( linker's criteria ) or ( pde's criteria )))).
• Adding a wildcard symbol may retrieve word variants: (((("weyl's criterion") or ("kelly criterion"))) or ((("linker's criteria") or ("pde's criteria"))))*.