Perhaps you should try some spelling variations:
"concerns criteria" » "cancer criteria", "concept criteria", "contests criteria"
"linker's criteria" » "funder's criteria"
"well's criterion" » "kelly's criterion", "kelly criterion", "levy's criterion"
"weil's criterion" » "kelly's criterion", "white's criterion", "levy'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 ("weil's criterion"))) OR ((("linker's criteria") OR ("concerns criteria")))).
• 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 (((\"linker's criteria\") or (\"concerns criteria\"))))".
• Removing quotes may allow a broader search: (((((( weyl's criterion ) OR ( well's criterion ))) or ( weil's criterion ))) or ((( linker's criteria ) or ( concerns criteria )))).
• Adding a wildcard symbol may retrieve word variants: (((((("weyl's criterion") OR ("well's criterion"))) or ("weil's criterion"))) or ((("linker's criteria") or ("concerns criteria"))))*.