Perhaps you should try some spelling variations:
carrier bacterial » barriers bacterial, carrier material, carrier materials
well's criterion » weyl's criterion, kelly's criterion, kelly criterion
funding criteria » feeding criteria, building criteria, using criteria

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 ((( funding criteria ) OR ( carrier bacterial )))).
• Adding a wildcard symbol may retrieve word variants: (( well's criterion ) or ((( funding criteria ) or ( carrier bacterial ))))*.