Perhaps you should try some spelling variations:
information centre » information centers, information contents
technologies fish » technologies fit, technologies bit, technologies from
developing effort » developing export, development effort, developing exports
fish information » fisher information, fishery information, fiscal information
3 communication » 4 communication, de communication, data communication
effort africa » exports africa, reform africa
centre model » centred model, centered model, centric model
4 developing » 3 developing
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technologies fish information centre model 3 communication costs 4 developing effort africa.*.