Perhaps you should try some spelling variations:
frequency networks » sequence networks
science networks » sciences network, sequence networks, alliance networks
science network » sciences network, science work, sequence networks
science works » science world, science workshop
science parks » science part

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: (((( ((science networks) OR (science network)). historical survey ) OR ( ((science works) OR (science parks)). historical survey ))) OR ( frequency networks. historical survey )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( ((science networks) or (science network)). historical survey ) or ( ((science works) OR (science parks)). historical survey ))) or ( frequency networks. historical survey ))".
• Adding a wildcard symbol may retrieve word variants: (((( ((science networks) or (science network)). historical survey ) or ( ((science works) OR (science parks)). historical survey ))) or ( frequency networks. historical survey ))*.