Perhaps you should try some spelling variations:
trade developpement » trade developement, trade development, de developpement
level communication » level communications, cell communication, event communication
communication net » communication new, communication neil, communication needs
information need » information needs, information needed, information speed
developpement en » developpement et, developpement des, developpement de
technologies b » technologies _, technologies 4, technologies 2
b information » 2 information, 1 information, job information
only level » only ever, only live, only lives
need only » read only, need one, used only
net trade » der trade

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

• Adding a wildcard symbol may retrieve word variants: technologies b information need only level communication net trade developpement en afrique.*.