Perhaps you should try some spelling variations:
immigration cultural » immigration control, immigration quotas, immigration country
technologies race » technologies case, technologies create, technologies places
2.3 communication » 3.2 communication, de communication, 4 communication
der developpement » de developpement, des developpements, leur developpement
race immigration » scale immigration, mass immigration, more immigration
developpement de » developpement des, developpement durable
communication 3 » communication _, communication a
cultural chc » culture chc, cultural case, cultural city
de afrique » de l'afrique, en afrique, l afrique
chc 2.3 » pcec 2.3, uhpc 2.3
3 der » _ der, 2 der

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

• Adding a wildcard symbol may retrieve word variants: technologies race immigration cultural chc 2.3 communication 3 der developpement de afrique.*.