Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
preface selection » preface selections, preface section, interface selection
developpement en » developpement et, developpement des, developpement de
a developpement » au developpement, de developpement, le developpement
method preface » author preface
selection des » selection de, selektion des, l'election des
des based » aes based, ses based, codes based
costs a » costs _, costs 4

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

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