Perhaps you should try some spelling variations:
4.2 communication » 4.2 communications, 3.2 communication, 4.1 communication
der developpement » de developpement, des developpements, leur developpement
developpement en » developpement et, developpement des, developpement de
communication 3 » communication _, communication a
technology age » technology usage, technology wages, technology a
age inflation » wage inflation, wages inflation, area inflation
rate rules » trade rules, water rules, wage rules
rules 4.2 » rules 3.2, rules 4.3
3 der » _ der, 2 der

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

• Adding a wildcard symbol may retrieve word variants: technology age inflation rate rules 4.2 communication 3 der developpement en afrique.*.