Perhaps you should try some spelling variations:
communication phase » communication case, communication based, communication paper
2.3 communication » 3.2 communication, de communication, 4 communication
der developpement » de developpement, des developpements, leur developpement
technology price » technology rich, technology voice, technology service
inflation rates » inflation rate
des afrique » en afrique, de l'afrique
rates rule » bayes rule, rate rules, rates reduce
rule 2.3 » rule 1.3, rule 2.2, rule 2.5

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

• Adding a wildcard symbol may retrieve word variants: technology price inflation rates rule 2.3 communication phase der developpement des afrique.*.