Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
3.3 communications » 3.1 communications, 3.3 communication, 2.3 communication
developpement la » developpement de, developpement et, developpement du
technology base » technology based, technology case, technology best
base isolation » base insulation, base solution, bus isolation
isolation nhau » isolation haus, isolation a, isolation auf
la afrique » l afrique, la fabrique, en afrique
rice 3.3 » rice 3.1, rice 2.1, rice 4.1

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

• Adding a wildcard symbol may retrieve word variants: technology base isolation nhau rice 3.3 communications costs _ developpement la afrique.*.