Perhaps you should try some spelling variations:
preface assertions » interface assertions, preface section, preface essentials
developpement de » developpement des, developpement durable
method preface » author preface
assertions aid » assertions _, assertions 3.2, assertions 5.2
create mobile » creating mobile, private mobile, create more
aid create » i create, guide create, sides create
de afrique » de l'afrique, en afrique, l afrique

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

• Adding a wildcard symbol may retrieve word variants: method preface assertions aid create mobile communication costs _ developpement de afrique.*.