Perhaps you should try some spelling variations:
test developpement » test development, et developpement, de developpement
1.1 communication » 4.1 communication, 1.3 communication, 1.4 communication
developpement de » developpement des, developpement durable
technology gaps » technology gap
inflation state » inflation starts, inflation rate, simulation state
gaps inflation » has inflation, grade inflation, rapid inflation
costs test » costs cost
de afrique » de l'afrique, en afrique, l afrique
space 1.1 » spaces 1.1, space 2.1, space 4.1

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

• Adding a wildcard symbol may retrieve word variants: technology gaps inflation state space 1.1 communication costs test developpement de afrique.*.