Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
some developpement » sme development, de developpement, le developpement
5.1 communication » 4.1 communication, 1.1 communication, 3.1 communication
technology trap » technology trade, technology tax, technology than
trap infection » tract infection, tract infections, viral infection
infection cti » infection uti, infection ratio, infections utis
cti process » dri process, i process, ii process
process 5.1 » process 2.1, processes 5.1, process 2.2
des afrique » en afrique, de l'afrique

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

• Adding a wildcard symbol may retrieve word variants: technology trap infection cti process 5.1 communication cost some developpement des afrique.*.