Perhaps you should try some spelling variations:
communication phase » communication case, communication based, communication paper
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
die developpement » de developpement, le developpement, du developpement
technology 1 » technology _
1 inflation » 10 inflation, 12 inflation, _ inflation
inflation a » inflation _, inflation tax, inflation rate
des afrique » en afrique, de l'afrique
prices 4.1 » price 4.1, prices 2.1, prices 3.1
phase die » phase i, phase ii, phase iii
a prices » a price, 2 prices, gas prices

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

• Adding a wildcard symbol may retrieve word variants: technology 1 inflation a prices 4.1 communication phase die developpement des afrique.*.