Perhaps you should try some spelling variations:
communication barriere » communication barriers, communication series, communication based
der developpement » de developpement, des developpements, leur developpement
developpement de » developpement des, developpement durable
technologies re » technologies ret, technologies art, technologies _
re formulacion » re formulation, la formulacion, rule formulation
formulacion de » formulation des, formacion de, formulation _
barriere der » barrieren der, barrieren des, barriera di
de afrique » de l'afrique, en afrique, l afrique
de does » der does, do does, one does

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

• Adding a wildcard symbol may retrieve word variants: technologies re formulacion de does _ communication barriere der developpement de afrique.*.