Perhaps you should try some spelling variations:
labor communication » layer communication, fiber communication, about communication
information 4.2.1 » information 3.2.1, information 4.1.1, information 4.2.2
le developpement » de developpement, sme development
developpement de » developpement des, developpement durable
can information » von information, von informationen
technology can » technology change, technology 1, technology 2.2
de afrique » de l'afrique, en afrique, l afrique
4.2.1 das » 3.2.1 das, 2.2.1 das, 1.2.1 das
das labor » laws labor, odds labor, u.s labor
costs le » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technology can information 4.2.1 das labor communication costs le developpement de afrique.*.