Perhaps you should try some spelling variations:
press delivered » reps delivered, address delivered, prisons delivered
stress derived » stress driven, strsv derived, stress perceived
stress drives » stress driven, stress diverse, stress diaries
ft press » mit press, hot press, get press

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: (( ft press delivered placenta ) OR ( get ((stress derived) OR (stress drives)) elements )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ft press delivered placenta ) or ( get ((stress derived) OR (stress drives)) elements ))".
• Adding a wildcard symbol may retrieve word variants: (( ft press delivered placenta ) or ( get ((stress derived) OR (stress drives)) elements ))*.