Perhaps you should try some spelling variations:
based communications » based communication, speed communications, aided communications
communications costs » communication costs, communications _
study confirmation » side confirmation, de confirmation, equal confirmation
4.2 developpement » 4.2 development, de developpement, le developpement
developpement l » developpement il, developpement la, developpement de
confirmation 2 » confirmation _, confirmation 3, confirmation 9
does based » codes based, homes based, aes based
l afrique » en afrique
2 does » 4 does

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

• Adding a wildcard symbol may retrieve word variants: technology study confirmation 2 does based communications costs 4.2 developpement l afrique.*.