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