Perhaps you should try some spelling variations:
kelly's criterion » kelly criterion, weyl's criterion, levy's criterion
linker's criteria » funder's criteria, line criteria
concerns criteria » cancer criteria, contests criteria, consensus criteria
concept criteria » consent criteria, contest criteria, context criteria

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "\"((\\"kelly's criterion\\") or (((\\"linker's criteria\\") or (\\"((concerns criteria) OR (concept criteria))\\"))))\"".
• Removing quotes may allow a broader search: (( kelly's criterion ) or ((( linker's criteria ) or ( ((concerns criteria) OR (concept criteria)) )))).