Perhaps you should try some spelling variations:
references inclusion » references conclusion, references inclusive, references conclusions
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
4 communication » 3 communication, 5.4 communication, de communication
inclusion 2.6 » inclusion 2.2, inclusion 2.3, inclusion 2.4
media de » media die, media der, media diet
2.6 die » 3.6 die, 4.6 die
die 4 » die _, die e

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

• Adding a wildcard symbol may retrieve word variants: methods references inclusion 2.6 die 4 communication media de developpement en afrique.*.