Perhaps you should try some spelling variations:
4.1 communication » 4 communication, 2.3 communication, 3.2 communication
communication law » communications law, communication layer, communication 3
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
inflation tax » inflation rate, inflation _, inflation target
tax crises » tax crimes, two crises, tax crime
crises 4.1 » crises 3.1, crises 8.1, crisis 4.1
law de » law die, law do

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

• Adding a wildcard symbol may retrieve word variants: technology _ inflation tax crises 4.1 communication law de developpement en afrique.*.