Perhaps you should try some spelling variations:
military intervention » policy intervention
intervention best » intervention bei, intervention recht, intervention der
us communication » u.s communications, c's communication, vs communications
20 development » 2 development, 2015 development, 2007 development
best data » test data, cost data, best damn
1 afrique » l afrique, en afrique, 1 enrique
costs 20 » costs 60, costs 2.3, costs 2.1
data us » data use, data used, data uses

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

• Adding a wildcard symbol may retrieve word variants: techniques military intervention best data us communication costs 20 development 1 afrique.*.