Perhaps you should try some spelling variations:
networks synthesis » network synthesis, networks systems, nets synthesis
health science » health sciences
walk synthesis » wall synthesis, work synthesis, wall biosynthesis
guide networks » guided networks, guide network, guided network
health guide » health guido, earth guide, health grid

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 ((walk synthesis) OR (mask synthesis)) report ) OR ( health guide networks synthesis report )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( health science ((walk synthesis) OR (mask synthesis)) report ) or ( health guide networks synthesis report ))".
• Adding a wildcard symbol may retrieve word variants: (( health science ((walk synthesis) OR (mask synthesis)) report ) or ( health guide networks synthesis report ))*.