Perhaps you should try some spelling variations:
networks synthesis » networks systems, nets synthesis
network synthesis » network systems
health influence » death influence, earth influence, hemath influence
guidance network » guide network, finance network, impedance network
heart influence » secret influence, impact influence
health guidance » health evidence, health finance, health substance

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 guidance network synthesis report )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((health influence) OR (heart influence)) networks synthesis report ) or ( health guidance network synthesis report ))".
• Adding a wildcard symbol may retrieve word variants: (( ((health influence) OR (heart influence)) networks synthesis report ) or ( health guidance network synthesis report ))*.