Perhaps you should try some spelling variations:
health impedance » health importance, health temperance, health imperative
health science » health sciences
work synthesis » world synthesis, walk synthesis, shock synthesis
systems report » system report, systems support, systems recent
head impedance » head impedances, load impedance, end impedance
dence network » dense network, defence network, dense networks
science work » science works, science world, science where
health dence » health device, health evidence, health devices

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 work synthesis report ) OR ( health dence network systems report ))) OR ( ((health impedance) OR (head impedance)) network synthesis report )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( health science work synthesis report ) or ( health dence network systems report ))) or ( ((health impedance) OR (head impedance)) network synthesis report ))".
• Adding a wildcard symbol may retrieve word variants: (((( health science work synthesis report ) or ( health dence network systems report ))) or ( ((health impedance) OR (head impedance)) network synthesis report ))*.