Perhaps you should try some spelling variations:
de developpements » des developpements, de developpement, deux developpements
developpements en » developpement en, developpement et, developpements de
integration wage » integration wege, integration wie, integration work
4 communication » 3 communication, 5.4 communication, de communication
technology zur » technology 4ir, technologien zur, technology _
wage trade » wages trade, wage rate, jade trade
costs de » costs _, costs 4, costs a
trade 4 » trade _, trade a

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

• Adding a wildcard symbol may retrieve word variants: technology zur integration wage trade 4 communication costs de developpements en afrique.*.