Perhaps you should try some spelling variations:
data communication » data communications
communication mode » communication model, communication modes, communication module
technologies age » technologies stage, technologies case, technologies a
de developpement » sme development
age information » care information, rate information, die information
developpement l » developpement il, developpement la, developpement de
preface 2.1 » preface 12.2, preface 1, preface 11
l afrique » en afrique
mode de » modes de, modele de

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

• Adding a wildcard symbol may retrieve word variants: technologies age information preface 2.1 data communication mode de developpement l afrique.*.