Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
preface selection » preface selections, preface section, interface selection
le developpement » de developpement, sme development
developpement en » developpement et, developpement des, developpement de
method preface » author preface
selection des » selection de, selektion des, l'election des
des based » aes based, ses based, codes based
costs le » 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 preface selection des based data communications costs le developpement en afrique.*.