Perhaps you should try some spelling variations:
network synthesis » network systems
health resistance » heat resistance, health assistance, health resilience
evidence network » science network, guidance network, dence network
earth resistance » acth resistance, early resistance, earth assistance
health evidence » health science

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