Perhaps you should try some spelling variations:
communication case » communications case, communication based, communication phase
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
developpement en » developpement et, developpement des, developpement de
d developpement » de developpement, du developpement, le developpement
technology gap » technology 1, technology 2.2, technology 3
gap inflation » has inflation, grade inflation, rapid inflation
inflation und » inflation index, inflation _, inflation tax
und prices » fund prices, land prices, bond prices
prices 4.1 » price 4.1, prices 2.1, prices 3.1
case d » case 1, case 2, case 3

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

• Adding a wildcard symbol may retrieve word variants: technology gap inflation und prices 4.1 communication case d developpement en afrique.*.