Perhaps you should try some spelling variations:
reasons delivered » persons delivered, sermons delivered, orations delivered
defined elements » defining elements, prefixed elements, mixed elements
poorer defined » poorly defined, poor defined, payer defined
ft reasons » its reasons, _ reasons, 2 reasons
get poorer » get power, get proper, meant poorer

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 reasons delivered placenta ) OR ( get poorer defined elements )).
• Adding a wildcard symbol may retrieve word variants: (( ft reasons delivered placenta ) or ( get poorer defined elements ))*.