Perhaps you should try some spelling variations:
evidence network » science network, dence network, incidence networks
guidance network » guide network, finance network, impedance network
health evidence » health science
heart sequences » head sequences, part sequences, cesaro sequences
health guidance » health finance, health substance
heart sequence » charts sequence, header sequence, heart frequency

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 recent ) OR ( ((heart sequence) OR (heart sequences)) network systems recent ))) OR ( health guidance network systems recent ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( health evidence network systems recent ) or ( ((heart sequence) OR (heart sequences)) network systems recent ))) or ( health guidance network systems recent ))*".