Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
4.2 communications » 4.2 communication, 3.2 communication, 6.2 communication
model development » local development, social development, global development
technology rate » technology state, technology role, technology related
inflation rates » inflation rate
rate inflation » grade inflation, wage inflation, age inflation
development en » developpement en, development menu, development eco
costs model » cost model, cost models, costs money
space 4.2 » space 3.2, space 2.2, space 4.3

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

• Adding a wildcard symbol may retrieve word variants: technology rate inflation rates space 4.2 communications costs model development en afrique.*.