Perhaps you should try some spelling variations:
"concerns criteria" » "cancer criteria", "concept criteria", "contests criteria"
"linker's criteria" » "funder's criteria", "line criteria"
"well's criterion" » "kelly's criterion", "kelly criterion", "li's criterion"
"levy's criterion" » "kelly's criterion", "lane's criterion", "level 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 ("levy'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 (\"levy's criterion\"))))) or (((\"linker's criteria\") OR (\"concerns criteria\"))))".
• Removing quotes may allow a broader search: (((( weyl's criterion ) or ((( well's criterion ) or ( levy'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 ("levy's criterion"))))) or ((("linker's criteria") OR ("concerns criteria"))))*.