Perhaps you should try some spelling variations:
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
study regulation » study population, study regulators, history regulation
regulation roles » regulations roles, regulation rules, regulation role
developpement la » developpement de, developpement et, developpement du
4 developpement » de developpement, le developpement, et developpement
roles france » roads france, role franco, tolls france
france 6.2 » france 6.25, france 6.1, france 2.2
la afrique » l afrique, la fabrique, en afrique
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology study regulation roles france 6.2 communication costs 4 developpement la afrique.*.