Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
2.3 communication » 3.2 communication, de communication, 4 communication
flow information » allow information, flood information, how information
information part » information pt, information portal, information portals
technology flow » technology low, technology from, technology food
cost youth » cost south, cost out, out youth
part case » art case, past case, plant case
1 afrique » l afrique, en afrique, 1 enrique
case 2.3 » case 3, case 4.1, case 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology flow information part case 2.3 communication cost youth development 1 afrique.*.