Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
low information » how information, allow information, new information
technology low » technology flow, technology law, technology led
information pt » information part, information 1, information 1.2
cost youth » cost south, cost out, out youth
1 afrique » l afrique, en afrique, 1 enrique
case 4.1 » case 4.2, case 1
pt case » past case, 1st case, art case

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

• Adding a wildcard symbol may retrieve word variants: technology low information pt case 4.1 communication cost youth development 1 afrique.*.