Perhaps you should try some spelling variations:
concerns criteria » contests criteria, consensus criteria, concerns write
concept criteria » consent criteria, contest criteria, context criteria
cancer criteria » inter criteria, cancer arterial, cancer bacteria
\"weyl's » \"well's, \"weil's

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: "\"((\\"weyl's criterion\\") or (((\\"((concerns criteria) OR (cancer criteria))\\") or (\\"concept criteria\\"))))\"".
• Removing quotes may allow a broader search: (( weyl's criterion ) or ((( ((concerns criteria) OR (cancer criteria)) ) or ( concept criteria )))).