Perhaps you should try some spelling variations:
communications networks » communication networks, telecommunications networks, telecommunications network
au developpement » du developpement, de developpement, le developpement
developpement et » developpement des, developpement de, development east
pt information » ct information, plot information, get information
technology pt » technology 1, technology 3, technology 4
networks au » networks a, networks a4, networks 1
et afrique » en afrique, l afrique
cost data » test data
3.2 cost » 5.2 cost, 3.2 case, 3.2 core

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

• Adding a wildcard symbol may retrieve word variants: technology pt information 3.2 cost data communications networks au developpement et afrique.*.