Perhaps you should try some spelling variations:
communication paper » communication power, communication pattern, communication partner
du developpement » de developpement, le developpement, et developpement
3 communication » 4 communication, de communication, data communication
technology 2.2 » technology _, technology 1, technology 3
inflation case » inflation causes, inflation rate, inflation can
2.2 inflation » 2.3 inflation, 3.2 inflation, 2.2.4 inflation
des afrique » en afrique, de l'afrique
paper du » paper d, paper cut, paper _
file 3 » file 13, file 23, file 30

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

• Adding a wildcard symbol may retrieve word variants: technology 2.2 inflation case file 3 communication paper du developpement des afrique.*.