Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
fees developpement » de developpement, le developpement, et developpement
preface selection » preface selections, preface section, interface selection
developpement en » developpement et, developpement des, developpement de
method preface » author preface
selection aes » selection des, selection a, selection de
aes based » ses based, areas based, cases based

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

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