Perhaps you should try some spelling variations:
communication phase » communication case, communication based, communication paper
life developpement » le developpement, de developpement, le dveloppement
3.1 communication » 3.1 communications, 3.2 communication, 3.5 communication
developpement de » developpement des, developpement durable
inflation goods » inflation good, inflation gross, information goods
goods prices » goods services, gas prices
prices 3.1 » prices 2.1, prices 3.2, prices 2.3.1
phase life » phase die
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: technology _ inflation goods prices 3.1 communication phase life developpement de afrique.*.