Perhaps you should try some spelling variations:
workers immunization » core immunization, workers remuneration, workers organizations
immunization costs » communication costs, communications costs, immunization systems
en developpement » et developpement, de developpement, le developpement
informationen 2 » informationen zu, information 2, informationen und
codes workers » border workers, care workers, co workers
des afrique » en afrique, de l'afrique
costs en » costs _, costs 4, costs a
2 codes » _ codes

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

• Adding a wildcard symbol may retrieve word variants: technology _ informationen 2 codes workers immunization costs en developpement des afrique.*.