Perhaps you should try some spelling variations:
data communication » data communications
human developments » human development, demand developments, bhutan development
developments over » development over, developments modern, developments after
variation across » variations across, education across, variation series
communication vs » communication v, communication via, communication _
across child » across high, across childhood, across paid
over afrique » en afrique, over africa
child data » chile data, child death, children data
vs human » 1 human, 10 human

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

• Adding a wildcard symbol may retrieve word variants: technologie _ variation across child data communication vs human developments over afrique.*.