Perhaps you should try some spelling variations:
communication network » communication networks, communications network, communications networks
information need » information needs, information needed, information speed
mine development » sme development, trade development, business development
technologies 2 » technologies _, technologies 4
network mine » network mpn, network model, network case
a afrique » l afrique, en afrique
need de » need le, need fide, need one

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

• Adding a wildcard symbol may retrieve word variants: technologies 2 information need de _ communication network mine development a afrique.*.