Perhaps you should try some spelling variations:
concerns criteria » concept criteria, contests criteria, consensus criteria
well's criterion » weyl's criterion, kelly's criterion, kelly criterion
cancer materials » carrier materials, chapter materials, laser materials
caliber arterial » cancer arterial, catheter arterial, after arterial
cancer criteria » inter criteria, cancer arterial, cancer bacteria

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