Perhaps you should try some spelling variations:
2.3.4 communication » 12.2.4 communication, 12.4.4 communication, 2.3 communication
communication case » communications case, communication based, communication phase
au developpement » du developpement, de developpement, le developpement
developpement de » developpement des, developpement durable
technology how » technology 1, technology 2.2, technology 3
inflation fuel » inflation build, inflation und, inflation auf
how inflation » low inflation, log inflation, has inflation
prices 2.3.4 » prices 2.3.1, prices 2.3.5, prices 2.3.6
de afrique » de l'afrique, en afrique, l afrique
case au » case a, case all

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

• Adding a wildcard symbol may retrieve word variants: technology how inflation fuel prices 2.3.4 communication case au developpement de afrique.*.