Perhaps you should try some spelling variations:
development second » development beyond, development section, development sectors
interaction term » interaction _
de communication » mobile communication, online communication
4 development » 2 development, 4 developing
term data » firm data, farm data, form data
data de » data den, data die, data do
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: technologies _ interaction term data de communication costs 4 development second afrique.*.