Perhaps you should try some spelling variations:
mine developpement » mine development, de developpement, le developpement
communication cote » communication costs, communication costa, communication case
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
developpement en » developpement et, developpement des, developpement de
technology 4.2 » technology 2.2, technology 3.2, technology 4.1
4.2 inflation » 3.2 inflation, 12 inflation, 2.3 inflation
inflation das » inflation bias, inflation tax, inflation a
cote mine » coal mine
das case » das coase, das cafe, das close
case 6.2 » case 6.12, case f6.2, case 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology 4.2 inflation das case 6.2 communication cote mine developpement en afrique.*.