Perhaps you should try some spelling variations:
intervention having » interventions having, interventions paving, intervention among
state intervention » health interventions
testing services » lending services, training services, banking services
support state » support staff, support strategy, support estimate
support 2002 » report 2002
2002 testing » 2006 getting

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( support 2002 testing services. ) or ( support state intervention having. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( support 2002 testing services. ) OR ( support state intervention having. )).
• Adding a wildcard symbol may retrieve word variants: (( support 2002 testing services. ) or ( support state intervention having. ))*.