Perhaps you should try some spelling variations:
conservation program » conservation programs, conservation project, conservation projects
technologies data » technologies daf, technologies dans, technologies a
data conservation » bat conservation, rattan conservation, land conservation
14 communications » 10 communications, 14 communication, 4 communications
developpement de » developpement des, developpement durable
a developpement » au developpement, de developpement, le developpement
program 11.3 » program 13.3, program 1.3, program 11.2.3
de afrique » de l'afrique, en afrique, l afrique
11.3 14 » 11.3 11.4

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

• Adding a wildcard symbol may retrieve word variants: technologies data conservation program 11.3 14 communications _ a developpement de afrique.*.