Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
development middle » development models
technologies aids » technologies varies, technologies a, technologies de
aids information » chandos information, series information
information gaps » information gap
costs human » sts human, ghosts humans, beasts human
gaps vom » gaps from, das vom, gaps do
vom data » from data, form data, aim data

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

• Adding a wildcard symbol may retrieve word variants: technologies aids information gaps vom data communications costs human development middle afrique.*.