Perhaps you should try some spelling variations:
communication phase » communication case, communication based, communication paper
5.4 communication » de communication, data communication
die developpement » de developpement, le developpement, du developpement
developpement en » developpement et, developpement des, developpement de
technology flow » technology low, technology from, technology food
flow inflation » low inflation, food inflation, log inflation
rate krise » rate crises, rate risk
krise 5.4 » krise 5.2, krise 14.4, krisen 2.4
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 flow inflation rate krise 5.4 communication phase die developpement en afrique.*.