Perhaps you should try some spelling variations:
models communication » modern communication, modeling communication, modern communications
de developpement » sme development
developpement de » developpement des, developpement durable
study selecting » study selection, study meeting, study reflections
selecting ses » selecting su, selecting _, selecting a
de afrique » de l'afrique, en afrique, l afrique
ses based » aes based, sms based, cases based
costs de » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technology study selecting ses based models communication costs de developpement de afrique.*.