Perhaps you should try some spelling variations:
workers immunization » core immunization, workers remuneration, workers organizations
immunization costs » communication costs, communications costs, immunization systems
informationen 2 » informationen zu, information 2, informationen und
4 developpement » de developpement, le developpement, et developpement
codes workers » border workers, care workers, co workers
des afrique » en afrique, de l'afrique
2 codes » _ codes
costs 4 » costs _, costs a, costs 4.2

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 4 developpement des afrique.*.