Perhaps you should try some spelling variations:
communication phase » communication case, communication based, communication paper
3.1 communication » 3.1 communications, 3.2 communication, 3.5 communication
die developpement » de developpement, le developpement, du developpement
developpement en » developpement et, developpement des, developpement de
inflation goods » inflation good, inflation gross, information goods
technology 1 » technology _
goods prices » goods services, gas prices
1 inflation » 10 inflation, 12 inflation, _ inflation
prices 3.1 » prices 2.1, prices 3.2, prices 2.3.1
phase die » phase i, phase ii, phase iii

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

• Adding a wildcard symbol may retrieve word variants: technology 1 inflation goods prices 3.1 communication phase die developpement en afrique.*.