Perhaps you should try some spelling variations:
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
le developpement » de developpement, sme development
developpement il » developpement de, developpement et, developpement du
natural housing » national housing, rural housing, natural computing
from natural » from national, from rural
prices 6.2 » prices 3.2, prices 4.2, prices 5.2
il afrique » l afrique, en afrique
costs le » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technology from natural housing prices 6.2 communication costs le developpement il afrique.*.