Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
interview selection » imageview selection, interface selection, interview location
des developpement » des developpements, de developpement, le developpement
method interview » methods interviews, method overview, author interview
developpement en » developpement et, developpement des, developpement de
selection ages » selection des, selection based, selection annex
ages case » wages case, age case, cases case
case data » cases data, base data, use data
costs des » costs fees

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

• Adding a wildcard symbol may retrieve word variants: method interview selection ages case data communications costs des developpement en afrique.*.