Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
model development » local development, social development, global development
information data » information d820, information database, information databases
4 communication » 3 communication, 5.4 communication, de communication
development en » developpement en, development menu, development eco
technology 1 » technology _
data scarce » data source, data sparse, data sources
scarce 4 » scarce 3, scare _, source 4

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

• Adding a wildcard symbol may retrieve word variants: technology 1 information data scarce 4 communication cost model development en afrique.*.