Perhaps you should try some spelling variations:
assistance network » assistance networked, resistance network, assistant network
health assistance » health substance, cash assistance
evidence network » science network, guidance network, dence network
health evidence » health science
systems support » system support, systems supporting, system supporting

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 assistance network systems support )).
• Adding a wildcard symbol may retrieve word variants: (( health evidence network synthesis report ) or ( health assistance network systems support ))*.