Perhaps you should try some spelling variations:
4.2 communication » 4.2 communications, 3.2 communication, 4.1 communication
der developpement » de developpement, des developpements, leur developpement
developpement de » developpement des, developpement durable
technology gaps » technology gap
communication 3 » communication _, communication a
gaps inflation » has inflation, grade inflation, rapid inflation
de afrique » de l'afrique, en afrique, l afrique
rate rate » rates rates, rate ratio, rate water
rate 4.2 » rates 4.2, rate 4.3, rate 5.2
3 der » _ der, 2 der

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

• Adding a wildcard symbol may retrieve word variants: technology gaps inflation rate rate 4.2 communication 3 der developpement de afrique.*.