Perhaps you should try some spelling variations:
connector service » connection service, connection services, connected services
sector services » sector service, secret services, server services
secure services » secure service, security services, care services

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: ((connector service) OR (((sector services) OR (secure services)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((connector service) or (((sector services) OR (secure services))))".
• Adding a wildcard symbol may retrieve word variants: ((connector service) or (((sector services) OR (secure services))))*.