Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
humans development » human development, humanist development, human developments
technologies 4 » technologies _
4 information » 2 information, 1 information
costs humans » ghosts humans, forests humans, sts human
1 afrique » l afrique, en afrique, 1 enrique
model v » model vs, model 1, model 2
v data » iv data, 2 data, 1 data

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

• Adding a wildcard symbol may retrieve word variants: technologies 4 information model v data communications costs humans development 1 afrique.*.