Perhaps you should try some spelling variations:
3.5 communication » 3.2 communication, 3 communication, 2.3 communication
developpement de » developpement des, developpement durable
technologies 3 » technologies _, technologies 4, technologies 2
evaluation age » evaluation stage, evaluation usage, evaluation a
de afrique » de l'afrique, en afrique, l afrique
age curve » wage curve, age care, a curve
curve 3.5 » curve 3.2, curve 3.3, curves 13.5

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

• Adding a wildcard symbol may retrieve word variants: technologies 3 evaluation age curve 3.5 communication costs _ developpement de afrique.*.