Perhaps you should try some spelling variations:
2.3.5 communication » 2.3 communication, 2.2.3 communication, 2.5 communication
developpement de » developpement des, developpement durable
technology case » technology based, technology can, technology change
case inflation » cases inflation, core inflation, wage inflation
index places » index place, index plates, deux places
places 2.3.5 » places 3.2.5, places 3.5, prices 2.3.5
de afrique » de l'afrique, en afrique, l afrique

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

• Adding a wildcard symbol may retrieve word variants: technology case inflation index places 2.3.5 communication costs _ developpement de afrique.*.