Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
4.1 communications » 4.1 communication, 3.1 communications, 4.1 communicating
child development » world development
technology rapid » technology rate, technology road, technology trap
rapid inflation » rapid population
inflation rates » inflation rate
costs child » costs china
space 4.1 » space 2.1, space 4.3, space 4.2
1 afrique » l afrique, en afrique, 1 enrique

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

• Adding a wildcard symbol may retrieve word variants: technology rapid inflation rates space 4.1 communications costs child development 1 afrique.*.