Perhaps you should try some spelling variations:
incidence networks » influence networks, science networks, incidents network
network synthesis » network systems
guidance network » guide network, finance network, impedance network
health guidance » health evidence, health substance
health finance » health insurance
inference » conference

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 ((incidence networks) OR (inference networks)) synthesis report\") or (((\"health guidance network synthesis report\") or (\"((health finance) OR (health financing)) network synthesis report\"))))".
• The words AND, OR and NOT may confuse the search; try adding quotes: "\"((\\"health ((incidence networks) or (inference networks)) synthesis report\\") or (((\\"health guidance network synthesis report\\") or (\\"((health finance) OR (health financing)) network synthesis report\\"))))\"".
• Removing quotes may allow a broader search: (( health ((incidence networks) or (inference networks)) synthesis report ) or ((( health guidance network synthesis report ) or ( ((health finance) OR (health financing)) network synthesis report )))).