Perhaps you should try some spelling variations:
networks synthesis » networks systems, nets synthesis
health influence » death influence, earth influence, hemath influence
health impedance » health importance, health temperance, head impedance
heart influence » secret influence, impact influence

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: (( ((health influence) OR (heart influence)) networks synthesis report ) OR ( health impedance ((network synthesis) OR (network systems)) report )).
• Adding a wildcard symbol may retrieve word variants: (( ((health influence) or (heart influence)) networks synthesis report ) or ( health impedance ((network synthesis) or (network systems)) report ))*.