Perhaps you should try some spelling variations:
le developpement » de developpement, sme development
population based » population age, simulation based, population data
developpement de » developpement des, developpement durable
technology city » technology ecit, technology china, technology costs
3 communication » 4 communication, de communication, data communication
based price » base price, base prices, based practice
de afrique » de l'afrique, en afrique, l afrique
costs le » costs _, costs 4, costs a
price 3 » price _, price a, price 2.3

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

• Adding a wildcard symbol may retrieve word variants: technology city population based price 3 communication costs le developpement de afrique.*.