Perhaps you should try some spelling variations:
leur developpement » le developpement, deux developpements, de developpement
technology early » technology energy, technology era, technology enabled
detection papers » detection process, detection based, question papers
de communication » mobile communication, online communication
developpement en » developpement et, developpement des, developpement de
papers spaces » papers papers, papers paper, places spaces
spaces de » espaces de, spaces _, spaces 3

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

• Adding a wildcard symbol may retrieve word variants: technology early detection papers spaces de communication a leur developpement en afrique.*.