Perhaps you should try some spelling variations:
substance network » distance network, substrate network, resistance network
science network » sciences network, science networks, science work
health science » health sciences
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 science network systems report ) OR ( health substance network synthesis report )).
• Adding a wildcard symbol may retrieve word variants: (( health science network systems report ) or ( health substance network synthesis report ))*.