Perhaps you should try some spelling variations:
models development » model development, module development, model developments
communication cost » communication costs, communication costa, communications costs
5.4 communication » de communication, data communication
development east » development southeast, development 1
get information » gets information, debt information, ct information
technology get » technology gap, technology gaps, technology 21st
information b » information 2, information 1, information bank
east afrique » east africa, east african, en afrique
cost models » cost model, logit models
false 5.4 » case 5.4
b false » _ false, a false, 2 false

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

• Adding a wildcard symbol may retrieve word variants: technology get information b false 5.4 communication cost models development east afrique.*.