Perhaps you should try some spelling variations:
information state » information states, information space, information staat
2.1 communication » 2.14 communication, 2.3 communication, 2.7 communication
developpement en » developpement et, developpement des, developpement de
2.1 information » 3.1 information
technology 2.1 » technology 2.2, technology 3.1, technology 1
state spaces » state space, safe spaces, state shares
spaces 2.1 » space 2.1, spaces 1.1, spaces 1

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

• Adding a wildcard symbol may retrieve word variants: technology 2.1 information state spaces 2.1 communication costs _ developpement en afrique.*.