Perhaps you should try some spelling variations:
13.3.9 communication » 13.3.10 communication, 13.4.5 communication, 3.3.2 communication
developpement de » developpement des, developpement durable
process 13.3.9 » process 13.3.1, process 3.3.1, process 1.3.1
technology 10 » technology 110, technology 1, technology 11
inflation und » inflation index, inflation _, inflation tax
10 inflation » 12 inflation, 10.7 inflation, _ inflation
und process » und prozess, undue process, und prozesse
de afrique » de l'afrique, en afrique, l afrique

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

• Adding a wildcard symbol may retrieve word variants: technology 10 inflation und process 13.3.9 communication costs _ developpement de afrique.*.