Perhaps you should try some spelling variations:
2.3.6 communication » 2.3 communication, 2.2.3 communication, 2.8.3 communication
communication case » communications case, communication based, communication phase
a developpement » au developpement, de 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
prices 2.3.6 » prices 2.3.1, prices 2.3.4, prices 2.3.5
des afrique » en afrique, de l'afrique
und prices » fund prices, land prices, bond prices
case a » 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 2.3.6 communication case a developpement des afrique.*.