Perhaps you should try some spelling variations:
3.2 communication » 3 communication, 2.3 communication, de 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 race » wages trade, wage rate, wages case
efforts le » efforts role, efforts old, efforts _
de afrique » de l'afrique, en afrique, l afrique
race 3.2 » race 3.7, race 4.2, rice 3.2

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 race 3.2 communication efforts le developpement de afrique.*.