Perhaps you should try some spelling variations:
development political » development policy, development policies
communications costs » communication costs, communications _
do communications » 10 communications, 14 communications, 2 communications
integration 3.2 » integration 4
costs human » sts human, ghosts humans, beasts human
political i » political ii, political _, political 1
3.2 does » 13.2 does, 3.1 does, 3.4.2 does
does do » does de, does d, does fdi

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

• Adding a wildcard symbol may retrieve word variants: technologies _ integration 3.2 does do communications costs human development political i.*.