Perhaps you should try some spelling variations:
personal communication » interpersonal communication
communication 12 » communication 1, communication 2, communication 10
test development » forest development, port development, mena development
typologie based » typology based, ontologies based
based variation » based validation, based valuation, based vaccination
variation oder » variation der, variation over, variation des
development de » development d, development ds, developpement de
den personal » der personal, de personal, des personal
de afrique » de l'afrique, en afrique, l afrique
oder den » oder der, wider den, uber den
12 test » 2 test, 1 test, r2 test

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

• Adding a wildcard symbol may retrieve word variants: typologie based variation oder den personal communication 12 test development de afrique.*.