Perhaps you should try some spelling variations:
role development » route development, rice development, code development
de communication » mobile communication, online communication
technology log » technology lag, technology low, technology law
development de » development d, development ds, developpement de
log sectional » _ sectional
efforts role » efforts old, cifor's role, effort gold
data source » data sources
de afrique » de l'afrique, en afrique, l afrique
source de » source des, source du, source code

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

• Adding a wildcard symbol may retrieve word variants: technology log sectional data source de communication efforts role development de afrique.*.