Perhaps you should try some spelling variations:
postal communication » post communication, oral communication, visual communication
communication cost » communication costs, communication costa, communications costs
model development » local development, social development, global development
development from » development forum, development fund
technology der » technology does, technology 4ir, technology dlt
higher postal » higher social, higher local, higher moral
der relation » der regulation, der relationen, der relativen
relation a » relation _, relational _, relation zur
a higher » a high, a highly

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

• Adding a wildcard symbol may retrieve word variants: technology der relation a higher postal communication cost model development from data.*.