Perhaps you should try some spelling variations:
convergence network » converged networks, convergence between
health convergence » health conference, real convergence, health conferences
substance network » distance network, substrate network, resistance network
evidence network » science network, guidance network, dence network
health evidence » health science
systems report » system report, systems support, systems recent

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