Perhaps you should try some spelling variations:
communication 3.3 » communication _, communication a, communication 1
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
technology 2.2 » technology _, technology 1, technology 3
infection data » infection rate, infection rates, section data
sources mobile » sources model
2.2 infection » 2.6 infection, 2.2.1 infection, 2.2.5 infection
3.3 de » 3.3 die, 3.3 der, 3.3 dem

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

• Adding a wildcard symbol may retrieve word variants: technology 2.2 infection data sources mobile communication 3.3 de developpement en afrique.*.