Perhaps you should try some spelling variations:
4.2 developpement » 4.2 development, de developpement, le developpement
1.1 communication » 4.1 communication, 1.3 communication, 1.4 communication
technology large » technology lag, technology law, technology land
large population » age population
population based » population age, simulation based, population data
developpement de » developpement des, developpement durable
based care » aged care
de afrique » de l'afrique, en afrique, l afrique
care 1.1 » care 10.1, care 11.1, care 12.1

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

• Adding a wildcard symbol may retrieve word variants: technology large population based care 1.1 communication costs 4.2 developpement de afrique.*.