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
sme development » trade development
technology 2.2 » technology _, technology 1, technology 3
development de » development d, development ds, developpement de
2.2 inflation » 2.3 inflation, 3.2 inflation, 2.2.4 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 sme » case sums, case s0, case sub

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 2.3.4 communication case sme development de afrique.*.