Perhaps you should try some spelling variations:
state integration » statt integration, scale integration, space integration
3.2 communication » 3 communication, 2.3 communication, de communication
technology state » technology strategy, technology system, technology study
integration wage » integration wege, integration wie, integration work
developpement en » developpement et, developpement des, developpement de
wage male » wage rate
male 3.2 » table 3.2, scale 3.2, cile 3.2

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

• Adding a wildcard symbol may retrieve word variants: technology state integration wage male 3.2 communication costs _ developpement en afrique.*.