Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
parte communications » partie communications, parte communication, wartime communications
overview selection » overview section, interview selection, overview reductions
developpement en » developpement et, developpement des, developpement de
method overview » methods overview
selection based » detection based, selection bias
e developpement » de developpement, le developpement, et developpement
based race » based face, based peace, based space
race parte » race part
costs e » 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: method overview selection based race parte communications costs e developpement en afrique.*.