Perhaps you should try some spelling variations:
2.2 communication » 2.3 communication, 3.2 communication, 2.7 communication
developpement en » developpement et, developpement des, developpement de
inflation rates » inflation rate
a developpement » au developpement, de developpement, le developpement
technology gap » technology 1, technology 2.2, technology 3
gap inflation » has inflation, grade inflation, rapid inflation
rates private » rate private, patents private, related private
private 2.2 » private 1.2, private 4.2, private 2.5.2
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology gap inflation rates private 2.2 communication costs a developpement en afrique.*.