Perhaps you should try some spelling variations:
5.5.2 communication » 3.3.2 communication, 3.4.2 communication, 4.2.2 communication
trade development » software development
information 3 » information 2
development l » development li, development 1, development law
technology 1 » technology _
costs trade » costly trade
case 5.5.2 » case 2.5.2, case 5.3.2, case 5.2
l afrique » en afrique

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

• Adding a wildcard symbol may retrieve word variants: technology 1 information 3 case 5.5.2 communication costs trade development l afrique.*.