Perhaps you should try some spelling variations:
model development » local development, social development, global development
technology price » technology rich, technology voice, technology service
inflation rates » inflation rate
4 communication » 3 communication, 5.4 communication, de communication
costs model » cost model, cost models, costs money
rates file » rates figure
1 afrique » l afrique, en afrique, 1 enrique
file 4 » file 14, file 24, file 34

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

• Adding a wildcard symbol may retrieve word variants: technology price inflation rates file 4 communication costs model development 1 afrique.*.