Perhaps you should try some spelling variations:
communication begins » communication belgium, communication belize, communication beyond
pit communication » put communication, post communication, et communication
technologies 3.1 » technologies 2.1, technologies 3.2, technologies _
le developpement » de developpement, sme development
developpement de » developpement des, developpement durable
3.1 informal » 2.1 informal, 3.3 informal, 3.5 informal
groups open » group's open, groups often, groups depend
de afrique » de l'afrique, en afrique, l afrique
begins le » begins _, begins 3, begins 7

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

• Adding a wildcard symbol may retrieve word variants: technologies 3.1 informal groups open pit communication begins le developpement de afrique.*.