Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
do communications » 10 communications, 14 communications, 2 communications
technology trade » technology trends, technology transfer, technology transfers
integration dow » integration do, integration does, integration der
costs human » sts human, ghosts humans, beasts human
dow goes » dow jones, d goes, der goes
goes do » goes so, goes down, games do

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

• Adding a wildcard symbol may retrieve word variants: technology trade integration dow goes do communications costs human development africa case.*.