Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
post communication » postal communication, iot communication, put communication
model development » local development, social development, global development
development from » development forum, development fund
technology der » technology does, technology 4ir, technology dlt
der relation » der regulation, der relationen, der relativen
higher post » higher cost, higher costs, higher test
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 post communication cost model development from data.*.