Perhaps you should try some spelling variations:
networks synthesis » networks systems, nets synthesis
health influence » heart influence, death influence, health incidence
hemath influence » death influence, demand influence, female influence
health impedance » health importance, health temperance, head impedance
heads influence » heart influence, beds influence, beams influence
earth influence » heart influence, early influence, birth 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 (heads influence))) OR (hemath influence))) OR (earth influence)) networks synthesis report ) OR ( health impedance ((network synthesis) OR (network systems)) report )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((((((health influence) OR (heads influence))) or (hemath influence))) or (earth influence)) networks synthesis report ) or ( health impedance ((network synthesis) or (network systems)) report ))".
• Adding a wildcard symbol may retrieve word variants: (( ((((((health influence) OR (heads influence))) or (hemath influence))) or (earth influence)) networks synthesis report ) or ( health impedance ((network synthesis) or (network systems)) report ))*.