Perhaps you should try some spelling variations:
2.3.5 communicating » 2.2.2 communicating, 2.6.7 communicating, 3.3.1 communicating
communicating model » communication model, communicating under, communication modes
developpement de » developpement des, developpement durable
technology hard » technology has, technology have, technology hydro
a developpement » au developpement, de developpement, le developpement
hard inflation » aid inflation, has inflation, hybrid inflation
inflation food » inflation good, inflation from, inflation und
prices 2.3.5 » prices 2.3.1, prices 2.3.4, prices 2.3.6
de afrique » de l'afrique, en afrique, l afrique
model a » model 1

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

• Adding a wildcard symbol may retrieve word variants: technology hard inflation food prices 2.3.5 communicating model a developpement de afrique.*.