Perhaps you should try some spelling variations:
technologies credit » technologies create, technologies reduce
communication costs » communication systems, communication efforts, communication skills
model development » local development, social development, global development
information gas » information gaps, information gap, information laws
costs model » cost model, cost models
a mobile » _ mobile
gas a » gas _, has a

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

• Adding a wildcard symbol may retrieve word variants: technologies credit information gas a mobile communication costs model development _ africa.*.