Perhaps you should try some spelling variations:
13.3.10 communication » 13.3.9 communication, 11.4.1 communication, 13.4.5 communication
developpement en » developpement et, developpement des, developpement de
technology rate » technology state, technology role, technology related
a developpement » au developpement, de developpement, le developpement
rate inflation » grade inflation, wage inflation, age inflation
primer 13.3.10 » primer 11.1.1
inflation und » inflation index, inflation _, inflation tax
und primer » und privater
costs a » costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology rate inflation und primer 13.3.10 communication costs a developpement en afrique.*.