Perhaps you should try some spelling variations:
das developpements » des developpements, deux developpements, de developpement
users information » user information, museums information, series information
information rates » information states, information ratio, information rules
4.3 communication » 2.3 communication, 4.1 communication, 4 communication
developpements de » developpement de, developpement des, developpement du
technology users » technology use, technology series, technology transfers
communication 1 » communication _, communication a, communication 3
rates rules » rate rules, gats rules, rates rates
de afrique » de l'afrique, en afrique, l afrique
rules 4.3 » rules 4.2, rules 3, rules 3.2

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

• Adding a wildcard symbol may retrieve word variants: technology users information rates rules 4.3 communication 1 das developpements de afrique.*.