Perhaps you should try some spelling variations:
13.4.5 communication » 10.4.3 communication, 11.4.1 communication, 12.4.4 communication
communication case » communications case, communication based, communication phase
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
technology 2.2 » technology _, technology 1, technology 3
2.2 inflation » 2.3 inflation, 3.2 inflation, 2.2.4 inflation
prices 13.4.5 » prices 3.4.2, prices 11.2.3, prices 11.3.1
case de » case des, case d, case d1

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

• Adding a wildcard symbol may retrieve word variants: technology 2.2 inflation _ prices 13.4.5 communication case de developpement en afrique.*.