Perhaps you should try some spelling variations:
3.5 communication » 3.2 communication, 3 communication, 2.3 communication
technology trade » technology trends, technology transfer, technology transfers
le developpement » de developpement, sme development
developpement de » developpement des, developpement durable
trade sector » care sector
wages races » wages race, wages prices, wage rates
efforts le » efforts role, efforts old, efforts _
de afrique » de l'afrique, en afrique, l afrique
races 3.5 » frames 3.5, places 3.5, spaces 3.5

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

• Adding a wildcard symbol may retrieve word variants: technology trade sector wages races 3.5 communication efforts le developpement de afrique.*.